Section 2 (Engine Controls - Tests W/Codes - 4.3L)
WARNING: This page is about a different car, the 1994 Chevrolet Caprice. 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 11, Malfunction Indicator Light
- Code 13, Open Left Heated Oxygen Sensor Circuit
- Code 14, Coolant Temperature Sensor Signal Voltage Low
- Code 15, Coolant Temperature Sensor Signal Voltage High
- Code 16, OPTI-Spark Ignition System Low Resolution Pulse
- Code 18, Injector Circuit
- Code 21, Throttle Position Sensor Signal Voltage High
- Code 22, Throttle Position Sensor Signal Voltage Low
- Code 23, IAT Sensor Signal Voltage High
- Code 24, Vehicle Speed Sensor
- Code 25, IAT Sensor Signal Voltage Low
- Code 26, Canister Purge Solenoid
- Code 27, EGR Solenoid Valve
- Code 28, Transmission Range Pressure Switch
- Code 29, Secondary Air Injection
- 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
- Code 36, OPTI-Spark High Resolution Pulse
- Code 37, TCC Brake Switch Error
- Code 38, TCC Brake Switch Error
- Code 41, OPTI-Spark Ignition System Open Or Shorted Est Circuit
- Code 42, Ic Circuit Grounded
- Code 43, Knock Sensor Circuit
- Code 44, Left Heated Oxygen Sensor Circuit Lean Indication
- Code 45, Left Heated Oxygen Sensor Circuit Rich Indication
- Code 46, Pass-Key Circuit
- Code 46 - Pass-Key Diagnosis
- Code 47, Knock Sensor Module
- Code 48, Mass Airflow Sensor
- Code 50, System Voltage Low
- Code 51, Faulty Prom/Mem-Cal
- Code 53, System Voltage High
- Code 55, Pcm Error
- Code 55, Fuel Lean Monitor
- Code 58, Transmission Temperature Sensor High Temperature
- Code 59, Transmission Temperature Sensor Low Temperature
- Code 63, Open Right Heated Oxygen Sensor Circuit
- Code 64, Right Heated Oxygen Sensor Lean Indication
- Code 65, Right Heated Oxygen Sensor Rich Indication
- Code 66, A/C Pressure Sensor
- Code 67, A/C Pressure Sensor
- Code 68, A/C Relay Circuit Shorted
- Code 69, A/C Compressor Relay
- Code 70, A/C Compressor Relay Driver
- Code 72, VSS
- Code 73, Pressure Control Solenoid
- Code 75, Transmission Voltage Low
- Code 77, Primary Cooling Fan Driver
- Code 78, Secondary Cooling Fan Driver
- Code 79, Transmission Fluid OVERTEMP
- Code 80, Transmission Component Slipping
- Code 81, 2-3 Shift Solenoid
- Code 82, 1-2 Shift Solenoid
- Code 84, 3-2 Control Solenoid - A/T
- Code 85, TCC Stuck On
- Code 90, TCC Solenoid Circuit
- Code 95, Change Oil Light
- Code 96, Low Oil Light
- Code 97, VSS Output Circuit
- Summary
- Wiring Diagrams