| Model | Year | Engine identification | System |
|---|---|---|---|
| Cougar/XR7 3.8L | 1992-95 | VIN position 8 = 4 | Ford EEC-IV |
| Cougar/XR7 5.OL HO | 1992-93 | VIN position 8 = T | Ford EEC-IV |
| Grand Marquis 4.6L | 1992-94 | VIN position 8 = W | Ford EEC-IV |
| Mystique 2.0L | 1995 | VIN position 8 = 3 | Ford EEC-IV |
| Mystique 2.5L | 1995 | VIN position 8 = L | Ford EEC-IV |
| Sable 3.0L | 1992-95 | VIN position 8 = U | Ford EEC-IV |
| Sable 3.8L | 1992-95 | VIN position 8 = 4 | Ford EEC-IV |
| Topaz 2.3L | 1992-94 | VIN position 8 = X | Ford EEC-IV |
| Topaz 3.0L | 1992-94 | VIN position 8 = U | Ford EEC-IV |
| Tracer 1.9L | 1992-95 | VIN position 8 = J | Ford EEC-IV |
General information
- 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.
- 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
Cougar/XR7 0o Grand Marquis flo Mystique Do Sable 9 .o Topaz iii.o Tracer iii.
Preparatory conditions
o Automatic transmission in ‘PARK’. o All auxiliary equipment, including air conditioning, switched OFF.
Accessing -Key On Engine Off (KOEO) test
Using malfunction indicator lamp (MIL)
- 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) 7.
- Switch ignition ON.
NOTE: MIL may flash briefly while fast DTCs are issued for Scan Tool followed by slow DTC 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:
o Trouble codes are displayed by illuminated MIL switching OFF.
o Each trouble code consists of two or three digits.
o A group of 0.5 second flashes indicate each digit 8 [A].
o A 0.5 second pause separates each flash [8] [B].
o A 2 second pause separates each trouble code digit [8] [C].
o A 4 second pause separates each trouble code [8] [D].
o For example: Three digit trouble code 122 displayed [8]. Throttle position (TP) sensor.
NOTE: Two digit trouble codes displayed in a similar pattern. o A 6-9 second pause [9] [B] indicates the end of trouble code output for present faults [9] [A]. o A 0.5 second flash (separator code) [9] [C], followed by a 6-9 second pause [9] [D] indicates the start of trouble code output for memorized faults [9] [E]. o 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
- 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 10.
- 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) 10.
- 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:
o Trouble codes are displayed by voltmeter needle deflecting to zero.
o Each trouble code consists of two or three digits.
o A group of 0.5 second needle deflections indicate each digit [8] [A].
o A 0.5 second pause separates each needle deflection [8] [B].
o A 2 second pause separates each trouble code digit [8] [C].
o A 4 second pause separates each trouble code [8] [D].
o For example: Three digit trouble code 122 displayed [8]. Throttle position (TP) sensor.NOTE: Two digit trouble codes displayed in a similar pattern. o A 6-9 second pause [9] [B] indicates the end of trouble code output for present faults [9] [A].
o A 0.5 second needle deflection (separator code) [9] [C]. followed by a 6-9 second pause [9] [D] indicates the start of trouble code output for memorized faults [9] [E].
o 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 and voltmeter.
- Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2
Accessing -Key On Engine Running (KOER) test
Using malfunction indicator lamp (MIL)
- 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) 7.
- Start engine.
- Engine identification code displayed as follows:
o 4 cylinder: Two 0.5 second flashes.
o 6 cylinder: Three 0.5 second flashes.o 8 cylinder: Four 0.5 second flashes.
o For example: 6 cylinder engine identified 11 [A].
- With PSP switch: Within 1-2 seconds, turn steering wheel at least Y, a turn and release.
- With BPP switch: Depress and release brake pedal.
- If fitted: Operate overdrive selection switch twice.
- If after 6-20 seconds 11 [B], a single 0.5 second flash is displayed (dynamic response signal) 11 [B] 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 11 [D].
- Fast DTCs are issued for Scan Tool during 4-15 second pause 11 [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 11 [F].
- For example: Three digit trouble code 111 is displayed 11. 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.
Using analogue voltmeter
- 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 10 .
- Set analogue voltmeter to a DC 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) 10 .
- Start engine.
- Engine identification code displayed as follows:
o 4 cylinder: Two 0.5 second needle deflections.
o 6 cylinder: Three 0.5 second needle deflections.
o 8 cylinder: Four 0.5 second flashes.
o For example: 6 cylinder engine identified 11 [A].
- With PSP switch: Within 1-2 seconds, turn steering wheel at least ‘h a turn and release.
- With BPP switch: Depress and release brake pedal.
- If fitted: Operate overdrive selection switch twice.
- If after 6-20 seconds 11 [B], a single 0.5 second needle deflection is displayed (dynamic response signal) 11 [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 11 [D] .
- Fast OTCs are issued for Scan Tool during 4-15 second pause 11 [E].
- 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 11[F].
- For example: Three digit trouble code 111 is displayed 11. 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.
Erasing
NOTE: Disconnecting battery ground lead may cause driveability problems until the engine management system relearns basic values.Using malfunction indicator lamp (MIL)
- 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 ) 7.
- 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:
o Disconnect battery ground cable for at least 5 minutes to erase adaptive memory from ECM.
o 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
- 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 10 .
- Set analogue voltmeter to a DC voltage range of 0-20 V.
- Jump DLC 1 terminal (STI) to DLC 2 terminal 2 (SIG RTN) 10 .
- 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 :
o Disconnect battery ground cable for at least 5 minutes to erase adaptive memory from ECM.
o 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.
Trouble code identification
| Flash code | Fault location | Probable cause |
| 11 | No fault found | – |
| 12 | Idle speed, high RPM check -unable to control during KOER test | Intake system, throttle tight/sticking, lAC valve/lSC actuator, ECM |
| 13 | Idle speed, low RPM check -unable to control during KOER test | Intake system, throttle tight/sticking, lAC valve/lSC 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/lSC 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 (10M) circuit/sparkoutput (SPOUT) circuit grounded | Wiring, ICM, ECM | |
| 19 | Engine control module (ECM) -intemal voltage fault | ECM |
| 21 | Engine coolant temperature (ECT) sensorincorrect signal | Wiring, ECT sensor, ECM |
| 22 | Manifold absolute pressure (MAP) sensorlbarometric pressure (BARO) sensor -incorrect signal | 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 dynamicresponse test | Wiring, K5, 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 positionsensor below minimum voltage | Wiring short circuit to ground, 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 positionsensor above maximum voltage | Wiring short circuit to positive, EGR valve/ position sensor, ECM |
| 41 | Heated oxygen sensor (H02S). bank 1 mixturelean/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 mixturerich/not switching | Intake blocked, excessive fuel in engine oil, fuel pressure high, breather system, injectors, H02S,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 duringKOEO test | Wiring short circuit, four wheel drive selector switch, internal damage to transfer case, ECM |
| 49 | Gear shift. 1-2 -malfunction | ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM |
| 51 | Engine coolant temperature (ECT) sensor opencircuit | Wiring open circuit, ECT sensor, ECM |
| 52 | Power steering pressure (PSP) switch -open circuitlno signal change | Wiring open circuit, PSP 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 (IAT) sensor -open circuit | Wiring open circuit, IAT sensor, ECM |
| 56 | Mass air flow (MAF) sensor -above maximum voltage | Wiring short circuit to positive, MAF sensor, ECM |
| 59 | Gear shift, 2-3 malfunction | ATF level/condition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM |
| 61 | Engine coolant temperature (ECT) sensor short circuit to ground | Wiring short circuit to ground, ECT sensor, ECM |
| 62 | Torque converter clutch (TCC) -excessive clutchslip | ATF level/condition, TCC slipping, ECM |
| 63 | Throttle position (TP) sensor -below minimumvoltage | TP sensor loose, wiring open circuit/short circuit to ground, TP sensor, ECM |
| 64 | Intake air temperature (IAT) sensor short circuit toground | Wiring short circuit to ground, IAT sensor, ECM |
| 65 | Overdrive selection switch -no signal change during 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 | |
| AlC on during KOEO test | Wiring, AlC switch, ECM | |
| 67 | Transmission range (TR) sensor -voltage high/ low | Incorrect adjustment, wiring, TR sensor, ECM |
| 68 | Automatic transmission fluid (ATF)temperature high | ATF level, transmission cooling system, towing weight limit exceeded, clutch slipping, wiring, TFT sensor, ECM |
| 69 | 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 circuit/no signal 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 | AlC 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 solenoidcircuit malfunction during KOEO test | Wiring, AIR bypass solenoid, ECM |
| 84 | Exhaust gas recirculation (EGR) solenoid -circuitmalfunction 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 mixturelean/not switching during KOER test | Intake leak, fuel pressure low, fuel filter/pump, injectors, H025, AIR system, MAF/MAP sensor, ECM |
| 91 | Shift solenoid (SS) 1 -circuit malfunction during KOEO test | Wiring, 55, ECM |
| 92 | Heated oxygen sensor (H02S). bank 1 mixture rich/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 |
| 92 | Shift solenoid (SS) 2 -circuit malfunction during KOEO test | Wiring, 55, ECM |
| 93 | Transmission coast clutch solenoid -circuit malfunction during KOEO test | Wiring, transmission coast clutch solenoid, ECM |
| 94 | Secondary air injection (AIR) system. bank 2inoperative during KOER test | Hose connection, wiring, AIR pump motor, AIR solenoid, ECM |
| 94 | Torque converter clutch (TCC) solenoid -circuit malfunction during KOEO test | Wiring, TCC solenoid, ECM |
| 95 | Fuel pump, secondary circuit -circuit malfunction | IF5 switch, wiring, fuel pump, ECM |
| 96 | Fuel pump, secondary circuit -circuit malfunction | IF5 switch, wiring open circuit to battery, fuel pump,ECM |
| 97 | Overdrive indicator lamp -circuit malfunction | Bulb, wiring, fuse, ECM |
| 98 | Engine control module (ECM) -hard fault detected during KOER test | H025 bank 2 -indicates lean, ECM |
| 98 | Engine control module (ECM), transmission fluid pressure (TFP) control -open driver circuit during KOEO test | ECM |
| 99 | Engine control module (ECM) -idle speed not learnt during KOER test | Idle speed adjusted, ECM |
| 99 | Transmission fluid pressure (TFP) solenoid -circuit malfunction during KOEO test | Wiring, poor connection, TFP solenoid, E |
| 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) sensorincorrect 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 throttlevoltage high/low | Throttle valve tight/sticking, TP sensor loose/ damaged, ECM |
| Throttle position (TP) sensor -voltage inconsistent with MAF sensor signal | Throttle valve tight/sticking, TP sensor loose/ damaged, ECM | |
| 122 | Throttle position (TP) sensor -below minimum voltage | 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 high/low | 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 notswitching | 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 | Mass air flow (MAF) sensor -voltage highllow | Intake leak, lAC valve, MAF sensor, ECM |
| 167 | Throttle position (TP) sensor -insufficient voltagechange 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, ignitionsystem, ECM |
| 172 | Heated oxygen sensor (H02S), bank 1 mixture lean | Intake leak, excessive fuel in engine oil, fuel pressure low, fuel filter/pump, injectors, H02S, AIR system, MAP sensor, ECM |
| 173 | Heated oxygen sensor (H02S), bank 1 mixture rich | Intake blocked, fuel pressure high, breather system, injectors, H02S, AIR system, EVAP system, MAP sensor, ignition system, ECM |
| 174 | Heated oxygen sensor (H02S), bank 1 -slowresponse | Intake leak, excessive fuel in engine oil, fuelpressure, fuel filter/pump, injectors, H02S, AIRsystem, 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, H02S, AIR system, EVAP system, MAPsensor, ignition system, ECM |
| 176 | Heated oxygen sensor (H02S), bank 2 mixturelean | 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 -slowresponse | 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 limitreached 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 leads/ 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 10° spark output (SPOUT) circuit open | Wiring open circuit, ICM, ECM |
| 221 | Ignition timing error | Wiring, ICM, ECM |
| 222 | Ignition diagnostic monitor (10M), right sidesignal 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 (KS) no signal during KOER dynamic response 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 cylinderbalance test requested | Wiring, CKP sensor, CMP sensor, ICM, ECM |
| 311 | Secondary air injection (AIR) system, bank 1inoperative during KOER test | Hose blocked/leaking, AIR bypass/divert solenoid, AIR pump, ECM |
| 312 | Secondary air injection (AIR) system misdirectedduring KOER test | Hose connections |
| 313 | Secondary air injection (AIR) system notbypassed during KOER test | Hose blocked/leaking, AIR bypass solenoid, AIR pump |
| 314 | Secondary air injection (AIR) system, bank 2 inoperative during KOER test | Hose blocked/leaking, AIR bypass/divert solenoid, AIR pump, ECM |
| 326 | Exhaust gas pressure sensor -voltage low | Hose blocked/leaking, wiring, exhaust gas pressure sensor, ECM |
| 326 | Exhaust gas pressure sensor -voltage low | Hose blocked/leaking, EGR solenoid filter, EGR solenoid, wiring, EGR valve, exhaust gas pressure sensor, ECM |
| 327 | Exhaust gas recirculation (EGR) valve position sensor minimum voltage exceeded | Wiring open circuit!short circuit to ground, EGR valve/position sensor, ECM |
| 327 | Exhaust gas pressure sensor -minimum voltageexceeded | Hose blocked/leaking, wiring open circuit! short circuit to ground, exhaust gas pressure sensor, ECM |
| 328 | Exhaust gas recirculation (EGR) valve position se,!sor, closed position -voltage low | Wiring, EGR valve/position sensor, ECM |
| 332 (j) | Exhaust gas recirculation (EGR) systeminsufficient flow detected | Hose blocked/leaking, EGR solenoid, exhaust gas pressure sensor, EGR valve, ECM |
| 332 | Exhaust gas recirculation (EGR) systeminsufficient flow detected | Hose blocked/leaking, wiring, EGR solenoid filter,EGR solenoid, EGR valve/position sensor, ECM |
| 334 | Exhaust gas recirculation (EGR) valve positionsensor, closed position -voltage high | Wiring, EGR valve/position sensor, EGR solenoid, ECM |
| 335 | Exhaust gas pressure sensor -voltage highllowduring 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 | Exhaust gas pressure sensor -above maximum voltage | Incorrect hose routing, wiring short circuit, signal wire open circuit, exhaust gas pressure sensor,EGR solenoid/valve, ECM |
| 337 | Exhaust gas pressure sensor -above maximumvoltage | Exhaust system restricted, wiring short circuit, signal wire open circuit, exhaust gas pressure sensor, ECM |
| 337 | Exhaust gas recirculation (EGR) position sensorabove maximum voltage | Wiring open circuit!short circuit to positive, EGR valve/position 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 switchdefective, 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 valve tight/sticking, 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 tight/ sticking,wiring open circuit/short circuit to ground, lAC valve, ECM |
| 415 | Idle air control (lAC) valve -lower limit reached | Intake leak, throttle valve tight/sticking, 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 -circuit malfunction 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 KOEO test/open circuit | Incorrect gear lever position, incorrect adjustment, wiring open circuit, starter motor relaydisconnected, 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 | |
| 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 (NP) -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, AlCswitch, ECM | |
| 5270 | 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) -circuitmalfunction | 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 -circuitmalfunction/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 | AlC -ON during KOEO test | Wiring, AlC switch, 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 | |
| 543 | Fuel pump (FP) secondary circuit -engine does notstart | 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 malfunctionduring 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 |
| 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 circuitmalfunction during KOEO test | Hose damaged, wiring, EGR solenoid, ECM |
| 559 | NC relay, primary circuit -circuit malfunction | Wiring, NC 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 constantcontrol 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 valve 1 -malfunction | Hose damaged, wiring, EVAP canister purge valve,ECM |
| 566 | Shift solenoid (SS) 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 | NC pressure sensor -short circuit | Supply wire short ground, NC pressure sensor, variable control relay module, ECM |
| 579 | NC pressure sensor -insufficient pressure change | Wiring, NC 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 | AlC compressor clutch -excessive current draw | Wiring short circuit to ground, AlC compressor clutch, variable control relay module, ECM |
| 586 | NC 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 (H02S) -heater cir~uitmalfunction . | Wiring, H02S heater relay, H02S, ECM |
| 617 | Gear shift, 1-2 -malfunction | ATF levellcondition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM |
| 618 | Gear shift, 2-3 -malfunction | ATF levellcondition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM |
| 619 | Gear shift, 3-4 -malfunction | ATF levellcondition, poor connection, wiring, TR sensor, 55, clutch slipping, ECM |
| 621 | Shift solenoid (SS) 1 -circuit malfunction duringKOEO | Wiring, 55, ECM |
| 622 | Shift solenoid (SS) 2 -circuit malfunction during KOEO | Wiring, 55, ECM |
| 6230 | 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), 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 levellcondition, TCC slipping, ECM |
| 629 | Torque converter clutch (TCC) solenoid -circuit malfunction | Wiring, TCC solenoid, ECM |
| 631 | Overdrive indicator lamp -circuit malfunction during KOEO test | Bulb, wiring, fuse, ECM |
| 632 | Overdrive selection switch -no signal changeduring 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 highl low | Incorrect adjustment, wiring, TR sensor, ECM |
| 636 | Transmission fluid temperature (TFT) sensorsignal highllow | ATF level, wiring, TFT sensor, ECM |
| 637 | Transmission fluid temperature (TFT) sensorabove maximum voltage | ATF level, wiring open circuit, TFT sensor, ECM |
| 638 | Transmission fluid temperature (TFT) sensorbelow minimum voltage | ATF level, wiring short circuit to ground, TFT sensor, ECM |
| 639 | Turbine shaft speed (TSS) sensorloutput shaftspeed (OSS) sensor -signal low | Wiring, T551055 sensor, ECM |
| 641 | Shift solenoid (SS) 3 -circuit malfunction during KOEO | Wiring, 55, ECM |
| 643 | Torque converter clutch (TCC) solenoid -circuitmalfunction during KOEO test | Wiring, TCC solenoid, ECM |
| 645 | Incorrect gear ratio, 1st gear | ATF levellcondition, 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 highllow | 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, incorrectadjustment, ECM |
| 655 | Transmission range (TR) sensor ‘N’ signal during KOEO test | Transmission not in ‘N’ during KOEO test, incorrectadjustment, 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, TFTsensor, 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 |