Cadillac OBD/OBD2 Codes >> Fleetwood 5.7L

ModelYearEngine identificationSystem
Fleetwood 5.7L1993-95VIN  position 8 = 7/PGM

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, the AlC control panel, or by using a Scan Tool connected to the data link connector (OLC).

Accessing

Without using A/C control panel
  • Access data link connector (DLC).
  • Jump data link connector (DLC) terminals A and B [1].
  • Switch ignition ON. D0 NOT start engine.
  • MIL should flash.
  • Long flashes indicate the ‘tens’ of the trouble code [2] [A].
  • Short flashes indicate the ‘units’ of the trouble code [2] [C].
  • A short pause separates each flash [2] [B].
  • A long pause separates each trouble code [2] [D].
  • For example: Trouble code 12 displayed [2] .
  • Trouble code 12 will be displayed 3 times.
  • Each trouble code will be displayed three times.
  • If no trouble codes are stored, code 12 will continue to be displayed.
  • Trouble codes can also be displayed by using a Scan Tool connected to the data link connector (DLC) [1], located below center of fascia near SRS control module.
Using A/C control panel
  • Switch ignition ON.
  • Simultaneously press and hold ‘OFF’ and ‘TEMP UP’ buttons [3]- [1] & [2].
  • When all segments of the display H [3]-3 illuminate: Release the ‘OFF’ and ‘TEMP UP’ buttons [3]- [1] & [2].
  • Parameter number ‘-00’ (ECM codes) will be displayed [3] 3.
  • Press and release the ‘OUT TEMP’ button [3] 4.
  • Buttons ‘FAN SPEED UP’ and ‘FAN SPEED DOWN’ [3] 5 increase or decrease the parameter numbers.
  • Display will alternate between ECM parameter number ‘-00’ and the trouble code at 1.6 second intervals [3] 3.
  • Trouble codes will be displayed in ascending order.
  • Cycle will be repeated after all ECM trouble codes have been displayed.
  • If no ECM trouble codes are stored, trouble code ’00’ will be displayed.
  • To end diagnosis:
  • Press the ‘AUTO’ button [3] 6 .

Erasing

Without using A/C control panel
  • Ensure ignition switched OFF.
  • Disconnect battery ground cable for 30 seconds.
  • Reconnect battery ground cable.
  • Repeat checking procedure to ensure no trouble codes remain in ECM fault memory.

NOTE: Disconnecting battery ground lead may also erase memory from electronic units, such as radio.

• Trouble codes can also be erased by using a Scan Tool connected to the data link connector (DLC) [1].
Using A/C control panel
  • Access ECM trouble codes.
  • During trouble code display:
o Press and hold ‘OFF’ [3] 2.
• When ’00’ is displayed [3] 3:
o Release the ‘OFF’ button [3] 2.
• To end diagnosis:
o Press the ‘AUTO’ button [3] 5.

Trouble code  identification

Trouble codeFault locationProbable cause
00 [1]No fault found
11Malfunction indicator lamp (MIL) -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, MIL bulb, supply wire, ECM
12Start of diagnosisNo RPM signal received
13 [2]Oxygen sensor (02S)Wiring open circuit, 025, ECM
13 [3]Heated oxygen sensor (H02S), bank 1 circuit malfunctionWiring open circuit, H02S, ECM
14Engine coolant temperature (ECT) sensor high temperature indicatedWiring short circuit to ground, ECT sensor, ECM
15Engine coolant temperature (ECT) sensor low temperature indicatedWiring open circuit, ECT sensor, ECM
16Ignition system -low resolution pulseWiring open circuit/short circuit to ground/ short circuit to positive, distributor, ECM
18Injector(s) -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to ground, supply wire, injectors, ECM
21Throttle position (TP) sensor -voltage highWiring open circuit/short circuit to positive, TP sensor, TP sensor interface module, ECM
22Throttle position (TP) sensor -voltage lowWiring open circuit/short circuit to ground, TP sensor, TP sensor interface module, ECM
23Intake air temperature (IAT) sensor -low temperature indicatedWiring open circuit, IAT sensor, ECM
24Vehicle speed sensor (VSS)Wiring open circuit/short circuit to ground, VSS, VSS buffer module, park neutral position circuit, ECM
25Intake air temperature (IAT) sensor -high temperature indicatedWiring short circuit to ground, IAT sensor, ECM
26 [2]Engine control module (EeM) quad driver! output driverWiring open circuit/short circuit to ground/ short circuit to positive, ECM controlled components, ECM a
26 [3]Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, supply wire, EVAP canister purge valve, ECM
27Exhaust gas recirculation (EGR) vacuum control -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, EGR valve, ECM
28Transmission range (TR) pressure switchWiring open circuit/short circuit to ground, ECM
29Secondary air injection (AIR) systemWiring open circuit/short circuit to ground/ short circuit to positive, AIR valve relay, ECM
32Exhaust gas recirculation (EGR) solenoidWiring open circuit/short circuit to ground, supply wire, EGR valve, ECM, hoses blocked/leaking, exhaust system blocked
33Manifold absolute pressure (MAP) sensor voltage high, low vacuum indicatedWiring short circuit to positive, hose blocked/leaking, MAP sensor, ECM
34Manifold absolute pressure (MAP) sensor voltage low, high vacuum indicatedWiring open circuit/short circuit to ground, MAP sensor, ECM
36Ignition system high resolution or extra low resolution pulse -circuit malfunctionWiring open circuit/short circuit to ground! short circuit to positive, distributor, ECM
37Brake switch stuck ONWiring open circuit/short circuit to ground! short circuit to positive, brake switch, ECM
38Brake switch stuck OFFWiring open circuit/short circuit to ground! short circuit to positive, brake switch, ECM
41Ignition control module (leM) -electronic spark timing (EST)!ignition control (Ie) circuit malfunctionWiring open circuit, 01 control module, ECM
42Ignition control module (ICM) -electronic spark timing (EST)/ignition control (IC)/bypass circuit malfunctionWiring open circuit/short circuit to ground, 01 control module, ECM
43Knock sensor (KS)Wiring open circuit/short circuit to ground/ short circuit to positive, KS, insecure PROM, ECM
44 [2]Oxygen sensor (02S) mixture leanWiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, MAP sensor, 02S, ECM
44 [3]Heated oxygen sensor (H02S). bank 1 mixture leanWiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, secondary air system, H02S, ECM
45 [2]Oxygen sensor (02S) mixture richWiring open circuit, fuel pressure high, injector(s) leaking, EVAP canister purge valve, TP sensor, MAP sensor, ECM
45 [3]Heated oxygen sensor (H02S), bank 1 mixture richWiring open circuit, fuel pressure high, fuel pressure regulator, injector(s) leaking, EVAP canister purge valve, TP sensor, EGR system,H02S, MAF sensor, ECM
46Immobilizer control module -fuel enable signalIncorrect ignition key, wiring open circuit/ short circuit to ground/short circuit to positive, immobilizer control module, ECM
47Knock sensor (KS) -circuit malfunctionInsecure PROM, ECM
48Mass air flow (MAF) sensor -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, MAF sensor, ECM
50System voltage lowWiring open circuit/short circuit to ground, alternator, ECM
51 [2]Engine control module (ECM) -PROMInsecure PROM, incorrect PROM, ECM
51 [3]Engine control module (ECM) -EEPROMInsecure EEPROM, incorrect EEPROM, ECM
53System voltage highAlternator, ECM
54Fuel pump circuit -voltage lowWiring open circuit/short circuit to ground, fuel pump relay, engine oil pressure warning lamp switch, fuel pump, ECM
55Engine control module (ECM). fuel lean monitorFuel filter/lines blocked, fuel pump
58Transmission fluid temperature (TFT) sensor high temperature indicatedWiring short circuit to ground, TFT sensor, ECM
59Transmission fluid temperature (TFT) sensor lowtemperature indicatedWiring open circuit, TFT sensor, ECM
63Heated oxygen sensor (H02S). bank 2 -opencircuitWiring open circuit/short circuit to ground/ short circuit to positive, H02S, ECM
64Heated oxygen sensor (H02S), bank 2 mixture leanWiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, secondary air system, ECM
65Heated oxygen sensor (H02S), bank 2 mixture richFuel pressure high, injector(s) leaking, EVAP canister purge valve, TP sensor, EGR system, H025 contamination, MAF sensor, ECM
66Ale refrigerant pressure sensor circuit -open or short circuitWiring open circuit/short circuit to ground/ short circuit to positive, AlC refrigerant pressure sensor, ECM
67Ale refrigerant pressure sensor circuit -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, AlC refrigerant pressure sensor
68Ale compressor clutch relay -circuit malfunctionWiring short circuit to ground!short circuit to positive, AlC compressor clutch relay, ECM
69Ale compressor clutch -circuit malfunctionWiring open circuit, AlC compressor clutch relay, ECM
70Ale compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground/ short to positive, AlC compressor clutch relay, ECM
72Vehicle speed sensor (VSS) -circuit malfunctionWiring open circuit, V55, ECM
73Pressure control solenoid -circuit malfunctionWiring open circuit/short circuit to ground/ short to positive, ECM
74Traction control system (TeS), circuit malfunctionWiring short circuit to ground, ABS control module trouble code(s) stored, ECM
75Transmission system -voltage lowSupply wire, alternator, ECM
77Engine coolant blower motor relay 1 -circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, engine coolant blower motor relay, ECM
78Engine coolant blower motor relay 2 -circuitmalfunctionWiring open circuit/short circuit to ground! short circuit to positive, engine coolant blower motor relay, ECM
79Transmission fluid -overtempWiring open circuit/short circuit to ground, TFT sensor, ECM
81Transmission shift solenoid (SS), 2nd-3rd circuit malfunctionWiring open circuit/short circuit to ground, 55, ECM
82Transmission shift solenoid (SS), 1st-2nd circuit malfunctionWiring open circuit/short circuit to ground, 55, ECM
83Torque converter clutch (Tee) solenoid, pulse width modulated -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, TCC solenoid, ECM
84Transmission shift solenoid (55), 3rd-2nd circuit malfunctionWiring open circuit/short circuit to ground, 55, ECM
85Torque converter clutch (Tee) stuck ONWiring open circuit/short circuit to ground, transmission mechanical fault, TCC solenoid
90Transmission Tee solenoid -circuit malfunctionWiring open circuit/short circuit to ground, TCC solenoid, ECM
95Change oil lamp -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, instrument panel, engine oil life lamp bulb, ECM
96Engine oil level warning lamp -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, instrument panel, engine oil level lamp bulb, oil level sensor, ECM
97Vehicle speed sensor (VSS) -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, VSS, ECM
[1] Code 00 is displayed when accessing trouble codes with the A/C control panel.
[2]Except 5.7L 1994-95 D
[3] 5.7L 1994-95
[4] Depending on model, year and equipment level, the following components may be connected to this circuit.

Use of the vehicle wiring diagram is recommended to confirm which components are fitted.

o NC compressor clutch relay
o NC condenser blower motor relay
o Engine coolant blower motor relay
o Engine coolant ‘hot’ warning lamp
o Evaporative emission (EVAP) canister purge valve
o Exhaust gas recirculation (EGR) solenoid
o Malfunction indicator lamp (MIL)
o Torque converter clutch (Tee) solenoid
o Transmission shift solenoids (SS)
o Transmission shift warning lamp (MT)