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.
1998 Chevrolet Prizm LSi, StandardFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Summary
- Circuit Tests
- Diagnostic Trouble Codes (DTCS)
- Notes
- DTC P0105: Manifold Absolute Pressure (Map) Sensor Circuit
- DTC P0106: Manifold Absolute Pressure (Map) Sensor System Performance
- DTC P0110: Intake Air Temperature (IAT) Sensor Circuit
- DTC P0115: Engine Coolant Temperature (ECT) Sensor Circuit
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Performance
- DTC P0120: Throttle Position (TP) Sensor Circuit
- DTC P0121: Throttle Position (TP) Sensor System Performance
- DTC P0125: ECT Excessive Time To Enter Closed Loop
- DTC P0130: Heated Oxygen Sensor-1 (Ho2S-1) Circuit
- DTC P0133: Heated Oxygen Sensor-1 (Ho2S-1) Slow Response
- DTC P0135: Heated Oxygen Sensor-1 (Ho2S-1) Heater Circuit
- DTC P0136: Heated Oxygen Sensor-2 (Ho2S-2) Circuit
- DTC P0141: Heated Oxygen Sensor-2 (Ho2S-2) Heater Circuit
- DTC P0171: Fuel Trim System Lean
- DTC P0172: Fuel Trim System Rich
- DTC P0300: Engine Misfire Detected
- DTC P0301, P0302, P0303 Or P0304: Cylinders No. 1-4 Misfire Detected
- DTC P0325: Knock Sensor (KS) Circuit
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit
- DTC P0336: Crankshaft Position (CKP) Sensor Performance
- DTC P0340: Camshaft Position (CMP) Sensor Circuit
- DTC P0420: Three-Way Catalyst (TWC) System Efficiency Low
- DTC P0440: Evaporative Emission (EVAP) System
- DTC P0441: Evaporative Emission (EVAP) System Incorrect Purge Flow
- DTC P0446: Evaporative Emission (EVAP) Vent Control System
- DTC P0450: Evaporative Emission (EVAP) System Pressure Sensor Circuit
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit
- DTC P0505: Idle Control System
- DTC P1300 Or P1310: Ignition Control Module No. 1 Or No. 2 Circuit
- DTC P1335: Crankshaft Position (CKP) Sensor Circuit
- DTC P1520: Stoplight Switch Circuit
- DTC P1600 Pcm Battery
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.
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