Lincoln Continental – Mark VII/VIII – Town Car (1992 – 1995) Trouble Code Info

Model Year Engine identification System
Continental 3.8L 1992-94 VIN  position 8 = 4   Ford EEC-IV
Mark VII  5.0L HO 1992 VIN  position 8 =  E   Ford EEC-IV
Mark V  4.6L DOHC 1993-95 VIN  position 8 =  V/W   Ford EEC-IV
Town Car 4.SL 1992-94 VIN  position 8 =  W   Ford EEC-IV

General information

  • Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
  • Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.
  • Continental:
  • Trouble codes can be displayed by the electronic message center or by using an analogue voltmeter or Scan Tool connected to the data link connectors (DLC) 1 and 2. 1
  continental-mark1continental-mark2
  • Mark VII/Mark Vlll/Town Car:continental-mark3
  • Trouble codes can be displayed by the MIL or by using an analogue voltmeter or Scan Tool connected to the data link connectors (DLC) 1 and 2:
o Mark VII 2
o Mark V 3
o Town Car 4

Accessing -Key On Engine Off (KOEO) test

Using malfunction indicator lamp (MIL) Mark VII/V/Town Car

  • Start engine.
  • Allow to idle until engine at normal operating temperature.
  • Switch ignition OFF.
  • Wait 10 seconds.
  • If engine does not start or stalls: Continue with KOEO test.
  • If fitted : Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 5).
  • Switch ignition ON .
NOTE: MIL may flash briefly while fast OTCs are issued for Scan Tool followed by slow OTC output.
  • Count MIL flashes. Note trouble codes. Compare with trouble code table.
  • Each trouble code is displayed twice. Firstly for present faults followed by those for memorized faults as follows:
Trouble codes are displayed by illuminated MIL switching OFF.
Each trouble code consists of two or three digits.
A group of 0.5 second flashes indicate each digit [6] A.
A 0.5 second pause separates each flash [6] B.
A 2 second pause separates each trouble code digit [6] C.
A 4 second pause separates each trouble code [6] D.
For example: Three digit trouble code 122 displayed [6]. Throttle position (TP) sensor.
continental-mark4continental-mark5
NOTE: Two digit trouble codes displayed in a similar pattern.
  • A 6-9 second pause [7] B indicates the end of trouble code output for present faults [7] A.
  • A 0.5 second flash (separator code) [7] C, followed by a 6-9 second pause [7] D indicates the start of trouble code output for memorized faults [7] E·
  • Trouble codes for memorized faults displayed in the same manner as those for present faults.
NOTE: Memorized trouble codes refer to faults that have occurred in the last 80 warm-up cycles.
  • Switch ignition OFF.
  • Remove jump lead.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.

Using analogue voltmeter -all models

  • Ensure ignition switched OFF.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Connect an analogue voltmeter between data link connector (DLC) 2 terminal 4 (STO) and battery (12 volt) positive [8].
  • Set analogue voltmeter to a OC voltage range of 0-20 v.
  • Start engine.
  • Allow to idle until engine at normal operating temperature.
  • Switch ignition OFF.
  • Wait 10 seconds.
  • If engine does not start or stalls: Continue with KOEO test.
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) [8].
  • Switch ignition ON.
NOTE: Voltmeter needle may briefly deflect while fast DTCs are issued for Scan Tool followed by slow DTC output.
  • Count voltmeter needle deflections. Note trouble codes. Compare with trouble code table.
  • Each trouble code is displayed twice. Firstly for present faults followed by those for memorized faults as follows:
> Trouble codes are displayed by voltmeter needle deflecting to zero. a Each trouble code consists of two or three digits.
> A group of 0.5 second needle deflections indicate each digit [6] [A].
> A 0.5 second pause separates each needle deflection [6] [B].
> A 2 second pause separates each trouble code digit [6] [C].
> A 4 second pause separates each trouble code [6] [D].
> For example: Three digit trouble code 122 displayed [6]. Throttle position (TP) sensor.
continental-mark6continental-mark7
NOTE: Two digit trouble codes displayed in a similar pattern.  
A 6-9 second pause [7] [B] indicates the end of trouble code output for present faults [7] [A]. A 0.5 second needle deflection (separator code) [7] [C], followed by a 6-9 second pause [7] [D] indicates the start of trouble code output for memorized faults [7] [E]. Trouble codes for memorized faults displayed in the same manner as those for present faults.
continental-mark8 NOTE: Memorized trouble codes refer to faults that have occurred in the last 80 warm-up cycles.
  • Switch ignition OFF.
  • Remove jump lead and voltmeter.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.

Using electronic message center Continental

  • Start engine.
  • Allow to idle until engine at normal operating temperature.
  • Switch ignition OFF.
  • Wait 10 seconds.
  • If engine does not start or stalls: Continue with KOEO test.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Press and hold all 3 message center buttons ‘Gauge Select’, ‘English Metric’ and ‘Speed Alarm’ [9] (1).
  • Switch ignition ON.
  • Release buttons.
  • Press ‘Gauge Select’ button 3 times until ‘dEALEr 4’ is displayed [9] [2].
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) [5].
  • Trouble codes displayed on the message center.
  • For example: Trouble code 111 displayed [9] [3]. No fault found.
  • Note trouble codes. Compare with trouble code table.
  • Switch ignition OFF.
  • Remove jump lead.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.
continental-mark9  

Accessing -Key On Engine Running (KOER) test

Using malfunction indicator lamp (Mil) Mark VII/V/Town Car

  • Start engine.
  • Allow to idle until engine at normal operating temperature.
  • Increase engine speed to over 2000 rpm for 2 minutes.
  • Switch ignition OFF.
  • Wait 10 seconds.
  • If fitted: Remove ‘EEC TEST’ cover to access data, link connector (DLC).
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 5.
  • Start engine.
  • Engine identification code displayed as follows:
  1. o 6 cylinder: Three 0.5 second flashes.
  2. o 8 cylinder: Four 0.5 second flashes.
  3. o For example: 6 cylinder engine identified [10] [A].
  • With PSP switch: Within 1-2 seconds, turn steering wheel at least 1/2 a turn and release.
  • With BPP switch: Depress and release brake pedal.
  • If fitted: Operate overdrive selection switch twice.
  • If after 6-20 seconds [10] [B]. a single 0.5 second flash is displayed (dynamic response signal) [10] [C]: Briefly fully open throttle.
NOTE: DO NOT fully open throttle during KOER test if no dynamic response signal is displayed.
  • Trouble codes displayed for present faults after 4-15 second pause [10] [D].
  • Fast OTCs are issued for Scan Tool during 4-15 second pause [10] [E].
  • Count Mil flashes. Note trouble codes. Compare with trouble code table.
NOTE: Each trouble code is displayed twice.
  • Trouble codes for KOER test are displayed in the same manner as those for KOEO test [6] [F].
  • For example: Three digit trouble code 111 is displayed [10]. No fault found.
  • Switch ignition OFF.
  • Remove jump lead.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.
continental-mark10

Using analogue voltmeter -all models

  • Ensure ignition switched OFF.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Connect an analogue voltmeter between data link connector (DLC) 2 terminal 4 (STO) and battery (12 volt) positive 8
  • Set analogue voltmeter to a OC voltage range of 0-20 V.
  • Start engine.
  • Allow to idle until engine at normal operating temperature.
  • Increase engine speed to over 2000 rpm for 2 minutes.
  • Switch ignition OFF.
  • Wait 10 seconds.
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 8
  • Start engine.
  • Engine identification code displayed as follows:
  1. o 6 cylinder: Three 0.5 second needle deflections.
  2. o 8 cylinder: Four 0.5 second needle deflections.
  3. o For example: 6 cylinder engine identified 10 [A].
  • With PSP switch: Within 1-2 seconds, turn steering wheel at least ‘h a turn and release.
  • With BPP switch: Oepress and release brake pedal.
  • If fitted: Operate overdrive selection switch twice.
  • If after 6-20 seconds 10 [B]. a single 0.5 second needle deflection is displayed (dynamic response signal) 10 [C]: Briefly fully open throttle.
NOTE: DO NOT fully open throttle during KOER test if no dynamic response signal is displayed.
  • Trouble codes displayed for present faults after 4-15 second pause iI!l [D].
  • Fast OTCs are issued for Scan Tool during 4-15 second pause iI!l IE).
  • Count needle deflections. Note trouble codes. Compare with trouble code table.
NOTE: Each trouble code is displayed twice.
  • Trouble codes for KOER test are displayed in the same manner as those for KOEO test 10 [F].
  • For example: Three digit trouble code 111 is displayed 10. No fault found .
  • Switch ignition OFF.
  • Remove jump lead and voltmeter.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.

Using electronic message center Continental

  • Start engine.
  • Allow to idle until engine at normal operating temperature.
  • Increase engine speed to over 2000 rpm for 2 minutes.
  • Switch ignition OFF.
  • Wait 10 seconds.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Press and hold all 3 message center buttons ‘Gauge Select’, ‘English Metric’ and ‘Speed Alarm’ 9 (1).
  • Start engine.
  • Release buttons.
  • Press ‘Gauge Select’ button 3 times until ‘dEALEr 4’ is displayed 9 [2].
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 5
  • Trouble codes displayed on the message center.
  • For example: Trouble code 111 displayed 9 [3].
  • Note trouble codes. Compare with trouble code table.
  • Switch ignition OFF.
  • Remove jump lead.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.

Erasing

NOTE: Disconnecting battery ground lead may cause driveability problems until the engine management system relearns basic values.

Using malfunction indicator lamp (MIL) Mark Vll/Vlll/Town Car

  • Ensure ignition switched OFF.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 5.
  • Switch ignition ON .
  • When trouble codes start to be displayed: Remove jump lead.
  • Switch ignition OFF.
  • Repeat accessing procedure to ensure no memorized trouble codes remain in ECM fault memory.
  • Trouble codes can also be erased by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.
  • If emission related component(s) have been replaced:
  1. Disconnect battery ground cable for at least 5 minutes to erase adaptive memory from ECM.
  2. If required: Drive vehicle for 10 miles or more to allow ECM to relearn basic values.
NOTE: Disconnecting battery ground lead may also erase memory from electronic units, such as radio.

Using analogue voltmeter -all models

  • Ensure ignition switched OFF.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Connect an analogue voltmeter between data link connector (DLC) 2 terminal 4 (STO) and battery (12 volt) positive [8]
  • Set analogue voltmeter to a DC voltage range of 0-20 V.
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) [8]
  • Switch ignition ON.
  • When trouble codes start to be displayed: Remove jump lead.
  • Switch ignition OFF.
  • Repeat accessing procedure to ensure no memorized trouble codes remain in ECM fault memory.
  • Trouble codes can also be erased by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.
  • If emission related component(s) have been replaced:
  1. Disconnect battery ground cable for at least 5 minutes to erase adaptive memory from ECM.
  2. If required: Drive vehicle for 10 miles or more to allow ECM to releam basic values.
NOTE: Disconnecting battery ground lead may also erase memory from electronic units, such as radio.

Using electronic message center Continental

  • Ensure ignition switched OFF.
  • If fitted: Remove ‘EEC TEST’ cover to access data link connector (DLC).
  • Press and hold all 3 message center buttons ‘Gauge Select’, ‘English Metric’ and ‘Speed Alarm’.
  • Switch ignition ON.
  • Release buttons.
  • Press ‘Gauge Select’ button 3 times until ‘dEALEr 4’ is displayed 9 [1].
  • Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 5
  • When trouble codes start to be displayed on message center: Remove jump lead.
  • Switch ignition OFF.
  • Repeat accessing procedure to ensure no memorized trouble codes remain in ECM fault memory.
  • Trouble codes can also be erased by using a Scan Tool connected to the data link connectors (DLC) 1 and 2.

Trouble code  identification

Flash code Fault location Probable cause
11 No fault found
12 Idle speed, high RPM check -unable to controlduring KOER test Intake system, throttle tight/sticking, lAC valve/ISC actuator, ECM
13 Idle speed, low RPM check -unable to control during KOER test Intake system, throttle tight/sticking, lAC valve/ISC actuator, ECM
14 Engine speed (RPM) sensor/profile ignition pickup(PIP) circuit -intermittent signal Incorrectly installed RPM sensor, wiring, poor connection, electrical interference, RPM sensor, ECM
15 Engine control module (ECM) -KAM/ROM fault Battery disconnected, wiring, fuses, ECM
16 Engine RPM too low for heated oxygen sensor(H02S) test Intake system, throttle tight/sticking, lAC valve/ISC actuator, ECM
Ignition diagnostic monitor (10M) circuit no signal during KOEO test Wiring, ICM, ECM
18 Spark output (SPOUT) circuit open Wiring, ICM, ECM
Ignition diagnostic monitor (IDM) circuit/sparkoutput (SPOUT) circuit grounded Wiring, ICM, ECM
19 Engine control module (ECM) -internal voltagefault ECM
21 Engine coolant temperature (ECT) sensorincorrect signal Wiring, ECT sensor, ECM
22 Manifold absolute pressure (MAP) sensor/ barometric pressure (SARO) sensor -incorrectsignal Vacuum hose damaged, trapped vacuum, high atmospheric pressure, excessive EGR, wiring, MAP/BARO sensor, ECM
23 Throttle position (TP) sensor -incorrect signal Throttle valve tight/sticking, wiring, TP sensor, ECM
24 Intake air temperature (IAT) sensor -incorrectsignal Wiring, IAT sensor, ECM
25 Knock sensor (KS) -no signal during dynamic response test Wiring, KS, ECM
26 Mass air flow (MAF) sensor -incorrect signal Intake leak/blockage, wiring, MAF sensor, ECM
29 Vehicle speed signal -incorrect signal Wiring, vehicle speed interface module, VSS, ECM
31 Exhaust gas recirculation (EGR) valve position sensor below minimum voltage Wiring short circuit to grbund, EGR valve/position sensor, ECM
32 Exhaust gas recirculation (EGR) valve position sensor below closed limit Wiring short circuit to ground, EGR valve/position sensor, ECM
33 Exhaust gas recirculation (EGR) valve not opening Wiring, EGR valve tight/sticking, ECM
34 Exhaust gas recirculation (EGR) valve position sensor above closed limit Wiring short circuit to positive, EGR valve/position sensor, ECM
35 Exhaust gas recirculation (EGR) valve position sensor above maximum voltage Wiring short circuit to positive, EGR valve/positionsensor, ECM
41 Heated oxygen sensor (H02S), bank 1 mixture lean/not switching Intake leak, fuel pressure low, fuel filter/pump,injectors, H025, AIR system, MAF/MAP sensor, ECM
42 Heated oxygen sensor (H02S), bank 1 mixture rich/not switching Intake blocked, excessive fuel in engine oil, fuel pressure high, breather system, injectors, H025, AIR system, EVAP system, MAF/MAP sensor, ignition system, ECM
43 Throttle position (TP) sensor -incorrect signal at idle Incorrectly adjusted, TP sensor, ECM
44 Secondary air injection (AIR) system, bank 1 inoperative Hose connection, wiring, AIR pump motor, AIR solenoid, ECM
45 Secondary air injection (AIR) -upstream during KOER test Hose connection, wiring, AIR solenoid, ECM
46 Secondary air injection (AIR) -not bypassed during KOER test Hose connection, wiring, AIR solenoid, ECM
47 Four wheel drive selector switch -closed during KOEO test Wiring short circuit, four wheel drive selector switch, internal damage to transfer case, ECM
490 Gear shift, 1-2 -malfunction ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
51 Engine coolant temperature (ECT) sensor open circuit Wiring open circuit, ECT sensor, ECM
52 Power steering pressure (PSP) switch -opencircuit/no signal change Wiring open circuit, P5P switch, ECM
53 Throttle position (TP) sensor -above maximum voltage TP sensor loose, wiring short circuit to positive, TP sensor, ECM
54 Intake air temperature (lAT) sensor -open circuit Wiring open circuit, IAT sensor, ECM
56 Mass air flow (MAF) sensor -above maximumvoltage Wiring short circuit to positive, MAF sensor, ECM
590 Gear shift, 2-3 -malfunction ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
61 Engine coolant temperature (EeT) sensor short circuit to ground Wiring short circuit to ground, ECT sensor, ECM
620 Torque converter clutch (TCC) -excessive clutch slip ATF level/condition, TCC slipping, ECM
63 Throttle position (TP) sensor -below minimum voltage TP sensor loose, wiring open circuit/short circuit to ground, TP sensor, ECM
64 Intake air temperature (IAT) sensor -short circuit to ground Wiring short circuit to ground, IAT sensor, ECM
650 Overdrive selection switch -no signal changeduring KOEO test Incorrect switch operation, wiring, fuse, overdrive selection switch, ECM
66 Mass air flow (MAF) sensor -below minimum voltage Wiring short circuit to ground, MAF sensor, ECM
67 Neutral position (NP) switch -open circuit Incorrect adjustment, wiring open circuit, NP switch, ECM
Clutch pedal position (CPP) switch -circuit malfunction Incorrect adjustment, wiring, CPP switch, ECM
NC on during KOEO test Wiring, NC switch, ECM .
670 Transmission range (TR) sensor -voltage high/low Incorrect adjustment, wiring, TR sensor, ECM
680 Automatic transmission fluid (ATF) temperature high ATF level, transmission cooling system, towing weight limit exceeded, clutch slipping, wiring, TFT sensor, ECM
690 Gear shift, 3-4 -malfunction ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
72 Manifold absolute pressure (MAP) sensor/mass air flow (MAF) sensor -incorrect signal change during dynamic response test Intake leak, wiring, MAP sensor, ECM
73 Throttle position (TP) sensor -incorrect signal change during dynamic response test Incorrect throttle operation, wiring, TP sensor, ECM
74 Brake pedal position (BPP) switch -open circuitlnosignal change during KOER test Incorrect brake pedal operation, wiring, BPP switch, ECM
75 Brake pedal position (BPP) switch -closed circuit Wiring, BPP switch, ECM
77 Wide open throttle (WOT) switch -no signal change during dynamic response test Incorrect throttle operation, wiring, WOT switch, ECM
79 NC on during KOEO test Wiring, AlC switch, ECM
81 Secondary air injection (AIR) divert solenoid -circuit malfunction during KOEO test Wiring, AIR divert solenoid, ECM
82 Secondary air injection (AIR) bypass solenoid -circuit malfunction during KOEO test Wiring, AIR bypass solenoid, ECM
84 Exhaust gas recirculation (EGR) solenoid -circuit malfunction during KOEO test Wiring, EGR solenoid, ECM
85 Evaporative emission (EVAP) canister purge valve -circuit malfunction during KOEO test Wiring, EVAP canister purge valve, ECM
86 AT -shift solenoid Wiring, shift solenoid, ECM
87 Fuel pump, primary circuit -circuit malfunction IF5 switch, wiring, fuel pump, ECM
89 Torque converter clutch (TCC) lock-up solenoid Wiring, TCC lock-up solenoid, ECM
91 Heated oxygen sensor (H02S), bank 2 mixture lean/not switching during KOER test Intake leak, fuel pressure low, fuel filter/pump, injectors, H025, AIR system, MAF/MAP sensor, ECM
91 0 Shift solenoid (SS) 1 -circuit malfunction during KOEO test Wiring, 55, ECM
92 Heated oxygen sensor (H02S), bank 1 mixturerich/not switching during KOER test Intake blocked, excessive fuel in engine oil, fuel pressure high, breather system, injectors, H025,AIR system, EVAP system, MAF/MAP sensor, ignition system, ECM
920 Shift solenoid (SS) 2 -circuit malfunction during KOEO test Wiring, 55, ECM
93 D Transmission· coast clutch solenoid -circuit malfunction during KOEO test Wiring, transmission coast clutch solenoid, ECM
94 Secondary air injection (AIR) system, bank 2 inoperative during KOER test Hose connection, wiring, AIR pump motor, AIR solenoid, ECM
940 Torque converter clutch (TCC) solenoid -circuit malfunction during KOEO test Wiring, TCC solenoid, ECM
95 Fuel pump. secondary circuit -circuit malfunction IFS switch, wiring, fuel pump, ECM
96 Fuel pump. secondary circuit -circuit malfunction IFS switch, wiring open circuit to battery, fuel pump, ECM
970 Overdrive indicator lamp -circuit malfunction Bulb, wiring, fuse, ECM
98 Engine control module (ECM) -hard fault detected during KOER test H02S bank 2 -indicates lean, ECM
98 D Engine control module (ECM). TFP control -open driver circuit during KOEO test ECM
99 Engine control module (ECM) -idle speed notlearnt during KOER test Idle speed adjusted, ECM
990 Transmission fluid pressure (TFP) solenoid circuit malfunction during KOEO test Wiring, poor connection, TFP solenoid, ECM
111 No fault found
112 Intake air temperature (IAT) sensor below minimum voltage Wiring short circuit to ground, poor connection, IAT sensor, ECM
113 Intake air temperature (IAT) sensor above maximum voltage Wiring open circuit, poor connection, IAT sensor, ECM
114 Intake air temperature (IAT) sensor incorrect signal Air temperature below 10°C (50°F), poor connection, IAT sensor, ECM
116 Engine coolant temperature (ECT) sensor incorrect signal Coolant level low, poor connection, ECT sensor, ECM
117 Engine coolant temperature (ECT) sensor below minimum voltage Wiring short circuit to ground, poor connection,ECT sensor, ECM
118 Engine coolant temperature (ECT) sensor above maximum voltage Wiring open circuit, poor connection, IAT sensor, ECM
121 Throttle position (TP) sensor -closed throttle voltage highllow Throttle valve tight/sticking, TP sensor looseldamaged, ECM
Throttle position (TP) sensor -voltage inconsistent with MAF sensor signal Throttle valve tight/sticking, TP sensor looseldamaged, ECM
122 Throttle position (TP) sensor below minimumvoltage TP sensor loose, wiring open circuit/short circuit to ground, TP sensor, ECM
123 Throttle position (TP) sensor -above maximum voltage TP sensor loose, wiring short circuit to positive, TP sensor, ECM
124 Throttle position (TP) sensor -voltage high Throttle tight/sticking, intake leak, MAP/BARO sensor, ECM
125 Throttle position (TP) sensor -voltage low Throttle tight/sticking, intake leak, MAP/BARO sensor, ECM
126 Manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor -voltage highllow Vacuum hose damaged/trapped, high atmospheric pressure, excessive EGR, wiring, MAP/BARO sensor, ECM
128 Manifold absolute pressure (MAP) sensor -loss of vacuum Vacuum hose damaged/disconnected, MAP sensor, ECM
129 Manifold absolute pressure (MAP) sensorinsufficient voltage change during KOER dynamic response test Incorrect throttle operation, vacuum hose damaged/disconnected, MAP sensor, lAC system, ECM
Mass air flow (MAF) sensor -insufficient . voltage change during KOER dynamic response test Incorrect throttle operation, intake leak, wiring, MAF sensor, lAC system, ECM
136 Heated oxygen sensor (H02S), bank 2 mixture lean during KOER test Intake leak, fuel pressure low, fuel filter/pump, injectors, H02S, AIR system, MAP sensor, ECM
137 Heated oxygen sensor (H02S), bank 2 mixture rich during KOER test Intake blocked, excessive fuel in engine oil, fuel pressure high, breather system, injectors, H02S,AIR system, EVAP system, MAP sensor, ignition system, ECM
138 Cold start injector -insufficient flow during KOER test Fuel pressure, wiring, cold start injector, ECM
139 Heated oxygen sensor (H02S), bank 2 -not switching Intake leak/blocked, injectors, H02S, AIR system,breather system, EVAP system, MAP sensor,ignition system, ECM
141 Fuel system indicates lean Intake leak, fuel pressure low, fuel filter/pump,injectors, H02S, ECM
144 Heated oxygen sensor (H02S), bank 1 -not switching Intake leak/blocked, injectors, H02S, AIR system,breather system, EVAP system, MAP sensor,ignition system, ECM
157 Mass air flow (MAF) sensor -below minimum voltage Wiring short circuit to ground, poor connection,MAF sensor, lAC system, ECM
158 Mass air flow (MAF) sensor -above maximum voltage Wiring short circuit to positive, MAF sensor screen blocked, MAF sensor, ECM
159 0 Mass air flow (MAF) sensor -voltage highllow Intake leak, lAC valve, MAF sensor, ECM
167 Throttle position (TP) sensor -insufficient voltage change during KOER dynamic response test Incorrect throttle operation, TP sensor, ECM
171 Fuel system control, bank 1 -adaptive limits reached Intake leak/blocked, breather system, fuel pressure, fuel filter/pump, injectors, H02S, AIR system, EVAP system, MAP sensor, ignition system, ECM
172 Heated oxygen sensor (H02S), bank 1 mixture lean Intake leak, fuel pressure low, fuel filter/pump,injectors, H02S, AIR system, MAP sensor, ECM
173 Heated oxygen sensor (H02S), bank 1 mixture rich Intake blocked, excessive fuel in engine oil, fuel pressure high, breather system, injectors, H025, AIR system, EVAP system, MAP sensor, ignition system, ECM
174 Heated oxygen sensor (H02S), bank 1 -slow response Intake leak, excessive fuel in engine oil, fuel pressure, fuel filter/pump, injectors, H02S, AIR system, MAF/MAP sensor, ECM
175 Fuel system control, bank 2 -adaptive limits reached Intake leak/blocked, excessive fuel in engine oil, breather system, fuel pressure, fuel filter/ pump, injectors, H025, AIR system, EVAP system, MAP sensor, ignition system, ECM
176 Heated oxygen sensor (H02S), bank 2 mixture lean Intake leak, fuel pressure low, fuel filter/pump, injectors, H02S, AIR system, MAP sensor, ECM
177 Heated oxygen sensor (H02S), bank 2 mixture rich Intake blocked, fuel pressure high, breather system, injectors, H02S, AIR system, EVAP system, MAP sensor, ignition system, ECM
178 Heated oxygen sensor (H02S), bank 2 -slow response Intake leak, excessive fuel in engine oil, fuel pressure, fuel filter/pump, injectors, H02S, AIR system, MAF/MAP sensor, ECM
179 Fuel control system, bank 1 -lean adaption limit reached at part throttle, mixture rich Intake leak, fuel pressure low, fuel filter blocked, wiring, injector, MAP sensor, ECM
181 Fuel control system, bank 1 -rich adaption limit reached at part throttle, mixture lean Intake blocked, fuel pressure high, wiring, injector, MAP sensor, ECM
182 Fuel control system, bank 1 -lean adaption limit reached at idle, mixture rich Intake leak, fuel pressure low, fuel filter blocked, wiring, injector, MAP sensor, ECM
183 Fuel control system, bank 1 -rich adaption limit reached at idle, mixture lean Intake blocked, fuel pressure high, wiring, injector, MAP sensor, ECM
184 Mass air flow (MAF) sensor -signal high MAF sensor screen blocked, MAF sensor, ECM
185 Mass air flow (MAF) sensor -signal low Intake leak, breather system, MAF sensor, ECM
186 Injector -pulse width long/mass air flow (MAF) sensor signal low Intake leak, fuel pressure low, MAF sensor, ECM
187 Injector -pulse width short/mass air flow (MAF) sensor signal high Intake blocked, fuel pressure high, MAF sensor, ECM
188 Fuel system control, bank 2 -lean adaption limit reached at part throttle, mixture rich Intake leak, fuel pressure low, fuel filter blocked, wiring, injector, MAP sensor, ECM
189 Fuel system control, bank 2 -rich adaption limit reached at part throttle, mixture lean Intake blocked, fuel pressure high, wiring, injector, MAP sensor, ECM
191 Fuel system control, bank 2 -lean adaption limit reached at idle, mixture rich Intake leak, fuel pressure low, fuel filter blocked, wiring, injector, MAP sensor, ECM
192 Fuel system control, bank 2 -rich adaption limit reached at idle, mixture lean Intake blocked, fuel pressure high, wiring, injector, MAP sensor, ECM
193 Fuel quality sensor -circuit malfunction Wiring, fuel separation, fuel quality sensor, ECM
194 Cylinder balance test -malfunction Wiring, injector, ECM
195 Cylinder balance test -malfunction Wiring, injector, ECM
211 Profile ignition pickup (PIP) -circuit malfunction Wiring, poor connection, arcing secondary ignition component coillcap/rotor/HT leadsl plugs, electrical interference, ECM
212 Ignition control module (ICM) -ignition diagnostic monitor (10M) signal missing Wiring, ICM, ECM
213 Spark output (SPOUT) -open circuit Wiring, ICM, ECM
214 Camshaft position (CMP) sensor -circuit malfunction Wiring, CMP sensor, ICM, ECM
215 Ignition coil 1 -primary circuit malfunction Wiring, ignition coil, ICM, ECM
216 Ignition coil 2 -primary circuit malfunction Wiring, ignition coil, ICM, ECM
217 Ignition coil 3 -primary circuit malfunction Wiring, ignition coil, ICM, ECM
218 Ignition diagnostic monitor (10M), left side signal missing Wiring, ignition coil, ECM
219 Ignition timing , defaulted to 100 -spark output (SPOUT) circuit open Wiring open circuit, ICM, ECM
221 Ignition timing error Wiring, ICM, ECM
222 Ignition diagnostic monitor (10M), right side signal missing Wiring, ignition coil, ECM
223 Loss of dual plug inhibit (OPI) control Wiring, ICM, ECM
224 Ignition coil 1, 2, 3 or 4 -primary circuit malfunction Wiring, ignition coil, ICM, ECM
225 Knock sensor -no signal during KOER dynamicresponse test Wiring, KS, ECM
226 Ignition control module (ICM) -ignition diagnostic monitor (10M) signal miSSing Wiring open circuit, ICM, ECM
232 Ignition coil 1, 2, 3 or 4 -primary circuit malfunction Wiring, ignition coil, ICM, ECM
238 Ignition coil 4 -primary circuit malfunction Wiring, ignition coil, ICM, ECM
241 Ignition control module (ICM) -ignition diagnostic monitor (10M) signal malfunction Wiring, ICM, ECM
244 Cylinder identification (CIO) fault when cylinder balance test requested Wiring, CKP sensor, CMP sensor, ICM, ECM
311 Secondary air injection (AIR) system, bank 1inoperative during KOER test Hose blockedlleaking, AIR bypass/divert solenoid,AIR pump, ECM
312 Secondary air injection (AIR) system -misdirected during KOER test Hose connections
313 Secondary air injection (AIR) system -not bypassed during KOER test Hose blockedlleaking, AIR bypass solenoid, AIR pump
314 Secondary air injection (AIR) system, bank 2inoperative during KOER test Hose blockedlleaking, AIR bypass/divert solenoid, AIR pump, ECM
326 f) Exhaust gas pressure sensor -voltage low Hose blockedlleaking, wiring, exhaust gas pressure sensor, ECM
3260 D Exhaust gas pressure sensor -voltage low Hose blocked/leaking, EGR solenoid filter, EGRsolenoid, wiring, EGR valve, exhaust gas pressure sensor, ECM
327 D Exhaust gas recirculation (EGR) valve position sensor minimum voltage exceeded Wiring open circuitlshort circuit to ground, EGR valve/position sensor, ECM
327 Exhaust gas pressure sensor -minimum voltage exceeded Hose blockedlleaking, wiring open circuitl shortcircuit to ground, exhaust gas pressure sensor, ECM
328 Exhaust gas recirculation (EGR) valve positionsensor, closed position -voltage low Wiring, EGR valve/position sensor, ECM
332 D Exhaust gas recirculation (EGR) systeminsufficient flow detected Hose blocked/leaking, wiring, EGR solenoid filter, EGR solenoid, EGR valve/position sensor, ECM
332 Exhaust gas recirculation (EGR) systeminsufficient flow detected Hose blockedlleaking, EGR solenoid, exhaust gas pressure sensor, EGR valve, ECM
334 Exhaust gas recirculation (EGR) valve position sensor, closed position -voltage high Wiring, EGR valve/position sensor, EGR solenoid, ECM
335 0 Exhaust gas pressure sensor -voltage highllow during KOEO test Exhaust gas pressure sensor, blocked inlet . hose, ECM
336 Exhaust gas pressure sensor -voltage high Exhaust system restricted, wiring, EGR solenoid,exhaust gas pressure sensor, EGR valve, hose routing, ECM
337 D Exhaust gas recirculation (EGR) position sensor above maximum voltage Wiring open circuitlshort circuit to positive, EGRvalve/position sensor, ECM
337 f) Exhaust gas pressure sensor -above maximum voltage Incorrect hose routing, wiring short circuit, signalwire open circuit, exhaust gas pressure sensor,EGR solenoid/valve, ECM
337 D Exhaust gas pressure sensor -above maximum voltage Exhaust system restricted, wiring short circuit, signal wire open circuit, exhaust gas pressure sensor, ECM
338 Engine coolant temperature (ECT) -too low Thermostat stuck open, coolant leak, ECM
339 Engine coolant temperature (ECT) -too high Coolant level low, thermostat stuck closed, cooling system blocked, coolant blower motorworn/damaged, water pump defective, coolant leak, ECM
341 Octane adjuster -open circuit Wiring, octane adjuster, ECM
381 AlC compressor clutch -excessive cycling AlC system incorrectly charged, cycling switch defective, AlC circuit fault, wiring intermittent open circuit to AlC system, ECM
411 Idle air control (lAC) valve no control during KOER low RPM check Idle speed adjustment, intake leak, throttle valvetightlsticking, ignition timing incorrect, wiring short circuit to ground, lAC valve, ECM
412 Idle air control (lAC) valve no control during KOER high RPM check Idle speed adjustment, throttle valve tightl sticking, wiring open circuitlshort circuit to ground, lACvalve, ECM
415 Idle air control (lAC) valve -lower limit reached Intake leak, throttle valve tightlsticking, lAC valve, ECM
416 Idle air control (lAC) valve -upper limit reached Air filter blocked, throttle body dirty/damaged, lACvalve, ECM
452 Vehicle speed sensor (VSS) -incorrect signal Wiring, VSS, ECM
453 Servo leaking down -cruise control KOER test Servo defective, ECM
454 Servo leaking up -cruise control KOER test Servo defective, ECM
455 Insufficient RPM increase -cruise control KOER test Intake system, ECM
456 Insufficient RPM decrease -cruise control KOER test Intake system, ECM
457 Cruise control master/selector switch -circuitmalfunction during KOEO test Wiring, cruise control master/selector switch, ECM
458 Cruise control master/selector switch -short circuit to ground during KOEO test Wiring short circuit to ground, cruise control master/selector switch, ECM
459 Cruise control system -ground open circuit during KOEO test Wiring open circuit, ECM
511 Engine control module (ECM) -ROM fault during KOEO test ECM
512 Engine control module (ECM) -KAM fault Battery disconnected, wiring, fuses, ECM
513 Engine control module (ECM) -internal voltage fault ECM
519 Power steering pressure (PSP) switch -circuitmalfunction during KOEO test PSP switch not fitted -disregard trouble code, wiring, PSP switch, ECM
521 Power steering pressure (PSP) switch -no signal change during KOEO test PSP switch not fitted -disregard trouble code,wiring, PSP switch, ECM
522 Park/neutral position (PNP) switch/neutral position(NP) switch -not in park/neutral during KOEOtest/open circuit Incorrect gear lever position, incorrect adjustment, wiring open circuit, starter motor relay disconnected, PNP/NP switch, ECM
Transmission range (TR) sensor not in park/ neutral during KOEO test Incorrect shift lever position, incorrect adjustment,wiring, TR sensor, ECM
524 Fuel pump (FP), highllow speed Wiring open circuit/short circuit to ground, left H02S short circuit to positive, ECM
525 Vehicle in gear during KOEO test Incorrect shift lever position, incorrect adjustment, PNP switch open, ECM
AlC -ON during KOEO test AlC ON, AlC wiring short circuit to positive, ECM
526 Neutral position switch -switch closed circuit during KOEO test Wiring short circuit, NP switch, ECM
AlC -ON during KOEO test AlC ON, AlC wiring short circuit to positive, AlC switch, ECM
527 Park/neutral position (PNP) switch/neutral position switch -open circuit during KOEO test Wiring open circuit, starter motor relay disconnected, PNP/NP switch, ECM
AlC -ON during KOEO test AlC ON, AlC wiring short circuit to positive, AlC switch, ECM
528 Clutch pedal position (CPP) switch -circuit malfunction Wiring open circuit, CPP switch, ECM
529 Data link/engine control module (ECM) -circuit malfunction Wiring, ECM
532 Instrument panel -circuit malfunction Wiring, instrument panel, ECM
533 Data link/instrument panel -circuit malfunction Wiring, instrument panel, ECM
536 Brake pedal position (BPP) switch -circuit malfunction/no signal change during KOER test Incorrect brake pedal operation, wiring, BPP switch, ECM
538 KOER dynamic response test -insufficient rpm change Incorrect throttle operation, ECM
KOER cylinder balance test -invalid test Throttle operated during test, CMP sensor, ECM
539 Ale -ON during KOEO test Wiring, AlC switch, ECM
5420 Fuel pump (FP) secondary circuit -engine does not start IFS switch, supply wire open circuit, ground wire, FP, ECM
Fuel pump (FP) secondary circuit -engine starts Supply wire short circuit to positive, high speed FP relay, FP to ECM wire open circuit, left/front H02S short circuit to positive, variable control relay module, ECM
542 Fuel pump (FP) secondary circuit -engine does not start IFS switch, supply wire open circuit, FP ground wire, FP, ECM
Fuel pump (FP) secondary circuit -engine starts Supply wire short circuit to positive, FP relay, FP to ECM wire open circuit, left! front H02S short circuit to positive, ECM
5430 Fuel pump (FP) secondary circuit, high/low speed -without DTC 583 Supply wire open circuit, left H02S short circuit to positive, ECM
Fuel pump (FP) secondary circuit, high/low speed -with DTC 583 Supply wire short circuit to ground, ECM
543 Fuel pump (FP) secondary circuit -engine does not start Supply wire open circuit, fuel pump relay, ECM
Fuel pump (FP) secondary circuit -engine starts Left!front H02S short circuit to positive, ECM
551 Idle air control (lAC) valve -circuit malfunction during KOEO test Wiring, lAC valve, ECM
552 Secondary air injection (AIR) bypass solenoid -circuit malfunction during KOEO test Wiring, AIR bypass solenoid, ECM
553 Secondary air injection (AIR) divert solenoid -circuit malfunction during KOEO test Wiring, AIR divert solenoid, ECM
554 Fuel pressure control solenoid -circuit malfunction Hose connection, wiring, fuel pressure control solenoid, ECM
5560 Fuel pump (FP) primary circuit -engine does not start Wiring short circuit to positive, variable control relay module, ECM
Fuel pump (FP) primary circuit -engine starts Wiring short circuit to ground, variable control relay module, ECM
556 Fuel pump (FP) primary circuit IFS switch, wiring, fuel pump relay, constant control relay module, ECM
557 Fuel pump (FP) primary circuit, low speed Wiring, FP relay/constant control relay module,ECM
558 Exhaust gas recirculation (EGR) solenoid -circuit malfunction during KOEO test Hose damaged, wiring, EGR solenoid, ECM
559 NC relay, primary circuit -circuit malfunction Wiring, AlC relay, ECM
562 Engine coolant blower motor relay -circuit malfunction Wiring, engine coolant blower motor relay, ECM
563 Engine coolant blower motor relay, high speed -circuit malfunction Wiring, engine coolant blower motor relayl constant control relay module, ECM
564 Engine coolant blower motor relay, low speed -circuit malfunction Wiring, engine coolant blower motor relayl constant control relay module, ECM
565 Evaporative emission (EVAP) canister purge valve1 -malfunction Hose damaged, wiring, EVAP canister purge valve,ECM
566 5hift solenoid (55) 3-4 -circuit malfunction Wiring, 55, ECM
567 Cruise control vent valve -circuit malfunction Wiring, cruise control vent valve, ECM
568 Cruise control vacuum valve -circuit malfunction Wiring, cruise control vacuum valve, ECM
569 Evaporative emission (EVAP) canister purge valve 2 -malfunction Hose damaged, wiring, EVAP canister purge valve,ECM
571 Exhaust gas recirculation (EGR) atmospheric solenoid -circuit malfunction during KOEO Wiring, EGR atmospheric solenoid, ECM
572 Exhaust gas recirculation (EGR) vacuum solenoid -circuit malfunction during KOEO Wiring, EGR vacuum solenoid, ECM
578 AlC pressure sensor -short circuit Supply wire short ground, AlC pressure sensor,variable control relay module, ECM
579 AlC pressure sensor -insufficient pressure change Wiring, AlC fault, AlC pressure sensor, variable control relay module, wiring to AlC compressor clutch open circuit, ECM
581 Engine coolant blower motor -excessive current draw Wiring short circuit to ground, engine coolant blower motor, variable control relay module, ECM
582 Engine coolant blower motor -open circuit! short circuit to positive Supply wire open circuit/short circuit to positive, ground wire open circuit, engine coolant blower motor, variable control relay module, ECM
583 Fuel pump -excessive current draw Wiring short circuit to ground, fuel pump, ECM
584 Variable control relay module -ground open circuit Wiring open circuit, variable control relay module, ECM
585 NC compressor clutch -‘ excessive current draw Wiring short circuit to ground, AlC compressor clutch, variable control relay module, ECM
586 AlC compressor clutch -open circuit!short circuit to positive Wiring open circuit/short circuit to positive, AlC compressor clutch, variable control relay module,ECM
587 Variable control relay module -communicationerror Wiring, variable control relay module, ECM
593 Heated oxygen sensor (H025) heater circuit malfunction Wiring, H02S heater relay, H02S, ECM
617 Gear shift, 1-2 malfunction ATF level/condition, poor connection, wiring, TRsensor, 55, clutch slipping, ECM
618 Gear shift, 2-3 -malfunction ATF level/condition, poor connection, wiring, TRsensor, 55, clutch slipping, ECM
619 Gear shift, 3-4 -malfunction ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
621 Shift solenoid (SS) 1 -circuit malfunction during KOEO Wiring, 55, ECM
622 Shift solenoid (SS) 2 -circuit malfunction duringKOEO Wiring, 55, ECM
623 Overdrive indicator lamp -circuit malfunction Bulb, wiring, fuse, ECM
624 Transmission fluid pressure (TFP) solenoid circuitmalfunction Wiring, poor connection, TFP solenoid, ECM
625 Engine control module (ECM), transmission fluid pressure (TFP) control -open driver circuit ECM
626 Transmission coast clutch solenoid -circuit malfunction during KOEO test Wiring, transmission coast clutch solenoid, ECM
627 Torque converter clutch (TCC) solenoid -circuit malfunction Wiring, TCC solenoid, ECM
628 Torque converter clutch (TCC) -excessive clutch slip ATF level/condition, TCC slipping, ECM
629 Torque converter clutch (TCC) solenoid -circuit malfunction Wiring, TCC solenoid, ECM
631 m Overdrive indicator lamp -circuit malfunction during KOEO test Bulb, wiring, fuse, ECM
632 Overdrive selection switch -no signal change during KOEO test Incorrect switch operation, wiring, fuse, overdrive selection switch, ECM
633 Four wheel drive selector switch -closed during KOEO test Wiring short circuit, four wheel drive selector switch, internal damage to transfer case, ECM
634 Transmission range (TR) sensor -voltage high/ low Incorrect adjustment, wiring, TR sensor, ECM
636 m Transmission fluid temperature (TFT) sensor signal highllow ATF level, wiring, TFT sensor, ECM
637 Transmission fluid temperature (TFT) sensor above maximum voltage ATF level, wiring open circuit, TFT sensor, ECM
638 Transmission fluid temperature (TFT) sensor below minimum voltage ATF level, wiring short circuit to ground, TFT sensor, ECM
639 Turbine shaft speed (TSS) sensor/output shaftspeed (OSS) sensor -signal low Wiring, TSS/OSS sensor, ECM
641 Shift solenoid (SS) 3 -circuit malfunction duringKOEO Wiring, 55, ECM
643 Torque converter clutch (TCC) solenoid -circuit malfunction during KOEO test Wiring, TCC solenoid, ECM
645 Incorrect gear ratio, 1 st gear ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
646 Incorrect gear ratio, 2nd gear ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
647 Incorrect gear ratio, 3rd gear ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
648 Incorrect gear ratio, 4th gear ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM
649 Transmission fluid pressure (TFP) solenoid -signal high/low Wiring, poor connection, TFP solenoid, ECM
651 Transmission fluid pressure (TFP) solenoid -circuit malfunction Wiring, poor connection, TFP solenoid, ECM
652 Torque converter clutch (TCC) solenoid -circuit malfunction Wiring, TCC solenoid, ECM
653 Overdrive selection switch -no signal change during KOEO test . Incorrect switch operation, wiring, fuse, overdrive selection switch, ECM
654 Transmission range (TR) sensor -‘P’ signal during KOEO test Transmission not in ‘P’ during KOEO test, incorrect adjustment, ECM
655 Transmission range (TR) sensor -‘N’ signal during KOEO test Transmission not in ‘N’ during KOEO test, incorrect adjustment, ECM
656 Torque converter clutch (TCC) -continuous clutch slip ATF level/condition, TCC slipping, ECM
657 Automatic transmission fluid (ATF) temperature high ATF level, transmission cooling system, towing weight limit exceeded, clutch slipping, wiring, TFT sensor, ECM
659 High vehicle speed -transmission in ‘P’ TR sensor/PNP switch, ECM
667 Transmission range (TR) sensor -below minimum voltage Wiring open circuit/short circuit to ground, TR sensor, ECM
668 Transmission range (TR) sensor -above maximum voltage Wiring open circuit/short circuit to positive, TR sensor, ECM
675 Transmission range (TR) sensor -out of range Wiring, TR sensor, ECM
691 Four wheel drive selector fault -incorrect engine RPM/vehicle speed Wiring short circuit, four wheel drive selector switch, internal damage to transfer case, ECM
692 Transmission state does not match calculated ratio Transmission fault, ECM
998 Engine control module (ECM) -hard fault present ECM