1994 Saturn SC2 StandardFACTORY OEM SERVICE PROCEDURE

Trouble Code Definition

ECM/PCM TROUBLE CODE DEFINITION

Code No. Circuit Affected
13 
Single O2 Sensor Models Oxygen Sensor Circuit Open
Dual O2 Sensor Models Left Oxygen Sensor Circuit Open
14  Coolant Temperature Sensor Signal Voltage Low
15  Coolant Temperature Sensor Signal Voltage High
17  PCM Fault, Pull-Up Resistor
19  6X Signal Fault
21  TPS Signal Voltage High
22  TPS Signal Voltage Low
23  MAT Sensor Signal Voltage High
24  Vehicle Speed Sensor
25  MAT Sensor Signal Voltage Low
26  Quad-Driver Error
32  EGR System Error
33  MAP Sensor Signal Voltage High
34  MAP Sensor Signal Voltage Low
35  IAC Idle Speed Error
41  EST Circuit Open Or Grounded
41 & 42 (1) By-Pass Open Or Grounded
42  By-Pass Circuit Open Or Shorted
43  ESC (Knock Sensor) Error
44 
Single O2 Sensor Models Lean Exhaust Indication
Dual O2 Sensor Models Left Lean Exhaust Indication
45 
Single O2 Sensor Models Rich Exhaust Indication
Dual O2 Sensor Models Left Rich Exhaust Indication
46  Power Steering Pressure Switch
49  High Idle RPM, Vacuum Leak
51  Faulty PROM, MEM-CAL Or ECM/PCM
52 Faulty CAL-PAK
53 System Overvoltage
55  PCM Error
58 Transmission Fluid Temp. High
59 Transmission Fluid Temp. Low
63 Right Oxygen Sensor Circuit Open (Dual-Sensor Models)
64 Right Oxygen Sensor Lean (Dual-Sensor Models)
66 A/C Pressure Sensor
67 A/C Pressure Sensor
81  Transmission Component Error
82  ABS Message Fault
82 Internal PCM Communication Fault
(1) Set simultaneously.
NOTE: Use trouble code charts only if SERVICE ENGINE SOON light is illuminated (indicating a current problem exists).
INFORMATION FLAG DEFINITION

Flag No. Circuit Affected
16  Electrical Variable Orifice (EVO) Fault
27  Quick Quad-Driver Output Fault
48  Reference Input Intermittent Or Noisy
52  Battery Voltage Out Of Range
53  ESC (Knock Present)
54  5-Volt Reference Ground
58  Battery Voltage Unstable
61  6X Signal Fault
63  Option Check Sum Error
67  Handwheel Sensor Circuit Fault
71  Cooling System High Temperature
72  Cooling System Low Temperature
73  Coolant Sensor Signal Unstable
74  Coolant/Transmission Temperature Sensor Ratio Error
75  Air Temperature Sensor Signal Unstable
76  TPS-To-MAP Sensor Voltage Out Of Range
83  Low Coolant
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