Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1994LUMINA BASEREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODES - 3.1L
1994 Chevrolet Lumina Base
Engine Controls - Tests W/Codes - 3.1L
1994 Chevrolet Lumina BaseSECTION Engine Controls - Tests W/Codes - 3.1L
- 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 17, Camshaft Sensor Error
- Code 21, Throttle Position Sensor Signal Voltage High
- Code 22, Throttle Position Sensor Signal Voltage Low
- Code 23, Mat Sensor Signal Voltage High - Lumina
- Code 24, Vehicle Speed Sensor
- Code 25, Mat Sensor Signal Voltage Low - Lumina
- Code 28, Transmission Range Pressure Switch - Except Lumina
- Code 32, EGR System Error - Lumina
- Code 33, Map Sensor Signal Voltage High
- Code 34, Map Sensor Signal Voltage Low
- Code 35, IAC Idle Speed Error
- Code 36, 24X Signal Error
- Code 37, TCC Brake Switch Error
- Code 41, Cylinder Select Error
- Code 42, Ic Circuit Open/Grounded
- Code 43, ESC Error
- Code 44, Lean Exhaust Indication
- Code 45, Rich Exhaust Indication
- Code 51, Faulty Prom/Mem-Cal
- Code 52, Faulty Cal-PAK
- Code 53, System Voltage High
- Code 54, Fuel Pump Voltage Low
- Code 55, Pcm Error
- Code 58, Transmission Temperature Sensor High Temperature
- Code 59, Transmission Temperature Sensor Low TEMPERAURE
- Code 61, Degraded Oxygen (O2) Sensor - Lumina
- Code 62, Gear SW Error - Lumina
- Code 66, Low A/C Charge - Lumina
- Code 66, A/C Pressure Sensor
- Code 70, High A/C Pressure
- Code 72, VSS
- Code 75, 76 Or 77, EGR Solenoid Error
- Code 79, Transmission Fluid OVERTEMP
- Code 80/90, Transaxle Component Slipping
- Code 82, 3X Signal Error
- Code 85, Prom Error & Code 87, EEPROM Error
- Code 96, Transmission Voltage Low
- Summary
- Wiring Diagrams
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.