Section 13 (Engine Controls - Tests W/Codes)
WARNING: This page is about a different car, the 1991 Geo Prizm. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- PRIZM GSi CODE CHARTS (VIN 5)
- Diagnostic Circuit Check
- Chart A1, No Check Engine Light
- Diagnostic Aids
- Chart A2, Check Engine Light Won't Flash On Steady
- Codes 12 & 13, No Rpm Signal/No Signal For 2 Seconds
- Code 14, IGN Signal Circuit/No Signal
- Code 21, O2 Sensor Circuit/Open Or Short Circuit
- Code 22, Coolant Temp Sensor/Open Or Short Circuit
- Code 24, Intake Air Temp Sensor CKT/Low Temp Indicated
- Code 25, O2 Circuit/Lean Exhaust Indicated
- Code 26, O2 Sensor Circuit/Rich Exhaust Indicated
- Code 27, Sub-O2 Sensor/Open Or Shorted CKT (CALIF. Only)
- Code 31, Mass Airflow Sensor/Short Circuit
- Code 41, Throttle Position Sensor/Open Or Short Circuit
- Code 42, Vehicle Speed Sensor (VSS) Circuit
- Code 43, No Crank Signal From Starter
- Code 51, No A/C Signal
- Code 52, Knock Sensor Signal/Open Or Short CKT
- Code 53, Knock Control Signal/Faulty ECM
- Code 71, EGR Gas Temp Sensor CKT (CALIFORNIA Only)
- PRIZM EXCEPT GSi CODE CHARTS (VIN 6)
- Diagnostic Circuit Check
- Chart A1, No Check Engine Light
- Diagnostic Aids
- Chart A2, Check Engine Light Won't Flash On Steady
- Codes 12 & 13, No Rpm Signal/No Signal For 2 Seconds
- Code 14, IGN Signal CKT, Open Or Short CKT
- Code 21, O2 Sensor CKT/Open Or Short CKT
- Code 22, Coolant Temp Sensor CKT/Open Or Shorted CKT
- Code 24, Intake Air Temp Sensor CKT/Low Temp Indicated
- Code 25, O2 CKT/Lean Exhaust Indicated
- Code 26, O2 Sensor CKT/Rich Exhaust Indicated
- Code 31, Map Sensor/Open Or Short CKT
- Code 41, Throttle Switch Circuit
- Code 42, Vehicle Speed Sensor Circuit
- Code 43, No Crank Signal From Starter
- Code 51, No A/C Signal
- Code 71, EGR Gas Temp Sensor CKT (CALIFORNIA Only)
- Summary