Section 13 (Engine Controls - Tests W/Codes - 2.3L PFI)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1990 Pontiac Grand Prix, 1990 Pontiac Grand Am, 1990 Oldsmobile Cutlass Supreme, 1990 Oldsmobile Cutlass Calais, and 1990 Chevrolet Beretta. However, it is still accessible from the selected car via links, so may be relevant.
- Body Designation Table
- Introduction
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- Code 13, Open Oxygen Sensor Circuit
- Code 14: Coolant Temp Sensor Signal Volt Low
- Code 15: Coolant Temp Sensor Signal Volt High
- Code 21: TPS Signal Voltage High
- Code 22: TPS Signal Voltage Low
- Code 23: Mat Sensor Signal Voltage High
- Code 24: Vehicle Speed Sensor
- Code 25: Mat Sensor Signal Voltage Low
- Code 26: Quad-Driver Error (L & N Bodies)
- Code 26, Quad-Driver Error (W Body)
- Code 32, EGR System Fault (W Body)
- Code 33, Map Sensor Signal Voltage High
- Code 34: Map Sensor Signal Voltage Low
- Code 35: IAC Idle Speed Error
- Code 41: 1X Reference Circuit
- Code 42: Elect SPART Timing Circuit Open Or GND
- Code 43: Elect Spark Control Retard Signal To Low
- Code 44: Lean Exhaust Indicated
- Code 45: Rich Exhaust Indicated
- Code 51: Faulty Mem-Cal
- Code 53 Faulty Alternator - Voltage High
- Code 62: Gear Switch Error (N Body)
- Code 62, Gear Switch Error (W Body)
- Code 65, Injector Current Low (L & N Bodies)
- Code 65, Injector Current Low W Body
- Code 66, A/C Pressure Sensor Volt Out Of Spec (L & N Bodies)
- Code 66: A/C Pressure Sensor Volt Out Of Spec (W Body)