Saturn OBD/OBD2 Codes >> S-Series 1.9L (1992 – 1995)

ModelYearEngine identificationSystem
S-Series  1.9L1992-95VIN  position 8 =  7/9/8GM

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 a Scan Tool connected to the data link connector (DLC).

Accessing

Models with data link connector (OLe) terminal B connected

  • Access data link connector (DLC).
  • Jump data link connector (DLC) terminals A and B 1.
  • Switch ignition ON . Do NOT start engine.
  • Count MIL flashes. Note trouble codes. Compare with trouble code table.
  • Firstly trouble code 12 will be displayed 3 times.
  • Trouble codes consist of 2 groups, displayed as follows:
o First group indicates the ‘tens’ of the trouble code 2 [A] .
o Second group indicates the ‘units’ of the trouble code 2 [C].
o A short pause separates each group 2 [B].
o A long pause separates each trouble code 2 [D].
o For example: Trouble code 12 displayed 2. Start of diagnosis.
• Each additional trouble code will now be displayed 3 times, in ascending order.
NOTE: If no additional 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.

Models without data link connector (OLe) terminal B connected

• Trouble codes can only be displayed by using a Scan Tool connected to the data link connector (DLC).

Erasing

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

Trouble code  identification

Flash codeFault locationProbable cause
11Transaxle trouble code loggedCheck transaxle
12Start of diagnosisNo engine speed (RPM) signal received
13Oxygen sensor (02S)/heated oxygen sensor (H02S)Wiring open circuit, 02S/H02S, ECM
14Engine coolant temperature (ECT) sensorvoltage lowWiring, ECT sensor, ECM
15Engine coolant temperature (ECT) sensorvoltage highWiring open circuit, ECT sensor, ECM
16System voltage high/lowWiring, battery, alternator
19Crankshaft position (CKP) sensor, 6X signal -circuit malfunctionWiring, CKP sensor, ECM
21Throttle position (TP) sensor -voltage highWiring, TP sensor, ECM
22Throttle position (TP) sensor -voltage lowWiring open circuit/short circuit to ground, TP sensor, ECM
23Intake air temperature (IAT) sensor -voltage highWiring, IAT sensor, ECM
24Vehicle speed sensor (VSS) -‘-no signalWiring, VSS, ECM
25Intake air temperature (IAT) sensor -voltage lowWiring short circuit to ground, IAT sensor, ECM
26Engine control module (ECM), quad driver! output driver -circuit malfunctionWiring, ECM controlled components, ECM 0
27Engine control module (ECM), quad driver! output driver -circuit malfunctionWiring, ECM controlled components, ECM 0
32Exhaust gas recirculation (EGR) solenoidWiring, poor connections, EGR valve, ECM
33Manifold absolute pressure (MAP) sensor voltage highllowWiring, hose blockedlleaking, MAP sensor, ECM
34Manifold absolute pressure (MAP) sensor voltage lowWiring open circuit/short circuit to ground, MAP sensor, ECM
35Idle air control (lAC) valveWiring, lAC valve, intake system leaking, fuel system, PCV valve, AlC system, mechanical fault, ECM
41Ignition control, bypass signal -circuit malfunctionWiring, poor connections, ICM, ECM
42Ignition control, timing signal -circuit malfunctionWiring, poor connections, ICM, ECM
43Knock sensor (KS) -circuit malfunctionWiring, KS, ECM
44Oxygen sensor (02S)!heated oxygen sensor (H02S) -mixture leanWiring open circuit/short circuit to ground,injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, 02S!H02S, ECM
48Ignition control system, reference signal -circuit malfunctionWiring, ICM, ECM
49Idle air control (lAC) valve -malfunctionWiring, lAC valve, intake system leaking, fuel system, PCV valve, AlC system, ECM
51Engine control module (ECM), PROM -malfunctionPoor connections, incorrect programming, ECM
52System voltage highllowWiring, alternator, battery
53Knock sensor (KS), knock present -unable to rectifyWiring, mechanical fault, ECM
54Engine control module (ECM), sensor supply voltage -circuit malfunctionWiring, poor connections, ECM
55Engine control module (ECM) -malfunctionEngine control module (ECM)
58System voltage -sharp voltage changesWiring, alternator
61Ignition control system, 6X signal -circuit malfunctionWiring, ICM, ECM
63Cruise control system -performance lowWiring, poor connections, accelerator cable sticking
67Steering wheel position sensor -voltage high! lowWiring, poor connections, steering wheel position sensor
71Engine coolant temperature (ECT) sensor voltage lowWiring, ECT sensor, ECM
72Engine coolant temperature (ECT) sensorvoltage highWiring open circuit, ECT sensor, ECM
73Engine coolant temperature (EeT) sensor sharp voltage changesWiring, ECT sensor, ECM
74Engine coolant temperature to transmission fluid temperature -signal variationWiring, ECT sensor, TFT sensor, ECM
75Intake air temperature (JAT) sensor sharp voltage changesWiring, JAT sensor, ECM
76Throttle position to manifold absolute pressure -signal variationWiring, TP sensor, MAP sensor, ECM
83Engine coolant ‘low’ warning lamp switchCoolant level low, wiring, engine coolant ‘low’warning lamp switch
84Engine control module (ECM) to transmission control module (TCM) -communication malfunctionPoor connections, incorrect programming, ECM