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.
2002 Chevrolet Prizm Base, StandardFACTORY OEM SERVICE PROCEDURE
Engine Controls - Self-Diagnostics - 1.8L
- Model Identification
- Introduction
- Self-Diagnostic System
- On-Board Diagnostics
- Intermittent Conditions
- Notes
- Preliminary
- Harness or Connector Intermittents
- Electrical Connections or Wiring
- Control Module Power & Grounds, & Component Power & Grounds
- Temperature Sensitivity
- Electromagnetic Interference (EMI) and Electrical Noise
- Incorrect PCM Programming
- Duplicating Failure Conditions
- Scan Tool Snapshot
- Vehicle Data Recorder
- Diagnostic Procedure
- Retrieving Diagnostic Trouble Codes
- Diagnostic System Check - Engine Controls
- Clearing Diagnostic Trouble Codes
- Scan Tool Usage
- Pcm Location
- Programming
- Inspection/Maintenance Procedures
- Drive Cycles
- Inspection/Maintenance System Check
- Inspection/Maintenance Complete System Set Procedure
- Inspection/Maintenance System DTC
- Inspection/Maintenance Catalyst System Set Procedure
- Inspection/Maintenance EVAP System Set Procedure
- Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor (Ho2S/O2S) System Set Procedure
- Inspection/Maintenance Heated Oxygen Sensor (Ho2S) System Set Procedure
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- System Tests
- Diagnostic Tests
- Notes
- DTC P0100: MAF Sensor Circuit
- DTC P0101: MAF Sensor Performance
- DTC P0110: IAT Sensor Circuit
- DTC P0115: ECT Sensor Circuit
- DTC P0116: ECT Sensor Circuit Performance
- DTC P0120: TP Sensor Circuit
- DTC P0121: TP Sensor System Performance
- DTC P0125: ECT Excessive Time To Enter Closed Loop
- DTC P0128: ECT Less Than Thermostat Regulating Temperature
- DTC P0130: Ho2S Circuit - Sensor 1
- DTC P0133: Ho2S Slow Response - Bank 1, Sensor 1
- DTC P0135 Or P0141: Ho2S Heater Performance
- DTC P0136: Ho2S Circuit - Sensor 2
- DTC P0171: Fuel Trim System - Lean
- DTC P0172: Fuel Trim System - Rich
- DTC P0300: Engine Misfire Detected
- DTC P0301-P0304: Cylinder Misfire Detected
- DTC P0325: Knock Sensor Circuit
- DTC P0335: Crankshaft Position Sensor Circuit
- DTC P0340: Camshaft Position Sensor Circuit
- DTC P0420: Catalyst System Low Efficiency
- DTC P0440: Evaporative Emission System
- DTC P0441: Evaporative Emission System No Flow During Purge
- DTC P0442: Evaporative Emission System Leak Detected
- DTC P0446: Evaporative Emission System Vent Performance
- DTC P0450: Fuel Tank Pressure Sensor Circuit
- DTC P0451: Fuel Tank Pressure Sensor Performance
- DTC P0505: Idle Control System
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 Or P1683: Pcm Memory
- DTC P1300, P1305, P1310 Or P1315: Ignition Coil Primary Feedback Circuit
- DTC P1335: Crankshaft Position Sensor Circuit
- DTC P1346: Intake Camshaft Position System Performance
- DTC P1349: Intake Camshaft Position System
- DTC P1656: Intake Camshaft Position Actuator Solenoid Control
Factory Service Tools
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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.