Section 8 (Engine Controls - Tests W/Codes - 3.1L)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1993 Pontiac Sunbird, 1993 Pontiac Grand Prix, 1993 Oldsmobile Cutlass Supreme, 1993 Chevrolet Lumina, and 1993 Chevrolet Corsica. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- ECM/Pcm Code Charts
- Notes
- Code 13 - Open Oxygen Sensor Circuit
- Code 14 - Coolant Temperature Sensor (Signal Voltage Low)
- Code 15 - Coolant Temperature Sensor (Signal Voltage High)
- Code 16 - System Voltage Low (3.1L CALIF. "W" Body)
- Code 17 - Camshaft Sensor Error (3.1L CALIF. "W" Body)
- Code 21 - Throttle Position Sensor (Signal Voltage High)
- Code 22 - Throttle Position Sensor (Signal Voltage Low)
- Code 23 - Mat Sensor (Signal Voltage High)
- Code 24 - Vehicle Speed Sensor
- Code 25 - Mat Sensor (Signal Voltage Low)
- Code 32 - EGR System Error
- Code 33 - Map Sensor (Signal Voltage High)
- Code 34 - Map Sensor (Signal Voltage Low)
- Code 35 - IAC Idle Speed Error Without Tech 1
- Code 35 - IAC Idle Speed Error Using Tech I
- Code 36 - 24X Signal Error (3.1L CALIF. "W" Body)
- Code 41 - Cylinder Select Error (3.1L)
- Code 42 - Est Circuit Open Or Grounded
- Code 43 - ESC Error (Without ESC Module)
- Code 44 - Lean Exhaust Indication
- Code 45 - Rich Exhaust Indication
- Code 51 - Faulty Prom/Mem-Cal
- Code 52 - Faulty Cal-PAK
- Code 53 - System OVERVOLTAGE
- Code 54 - Fuel Pump Voltage Low (3.1L "J" & "L" Bodies)
- Code 54 - Fuel Pump Voltage Low (3.1L "W" Body)
- Code 55 - ECM Error
- Code 61 - Degraded Oxygen (O2) Sensor (3.1L (Exc. CALIF.)
- Code 62 - Gear Switch Error - 3.1L (Exc. CALIF. "W" Body)
- Code 66 - A/C Pressure Sensor (3.1L Exc. CALIF "W" Body)
- Code 66 - Low A/C Charge (3.1L CALIF. "W" Body)
- Code 70 - High A/C Pressure (3.1L CALIF. "W" Body)
- Code 75, 76 Or 77 - EGR Solenoid (3.1L CALIF. "W" Body)
- Code 79 - VSS Signal Voltage High (3.1L CALIF. "W" Body)
- Code 80 - VSS Signal Voltage Low (3.1L CALIF. "W" Body)
- Code 81 - Brake Switch Error (3.1L CALIF. "W" Body)
- Code 82 - 3X Signal Error (3.1L CALIF. "W" Body)
- Code 85 - Prom Error & Code 87 - EEPROM Error
- Code 86 - Analog/Digital Error (3.1L CALIF. "W" Body)
- Summary