WARNING: Ensure all codes, "Readiness", and/or "Once Per Trip Tests" have been recorded before clearing codes. Information may be erased when code information is cleared. Certain driving pattern tests must be completed to satisfy all I/M inspection criteria. Driving test (drive cycle) information is not available from manufacturer.

Once repairs have been performed, codes must be cleared from ECM memory. Codes may be cleared by following methods:

Scan tool (follow manufacturer's instructions).
Remove EFI fuse (15-amp) from engine compartment fuse box, near the battery, for 10 seconds or more to clear memory in ECM.
Disconnecting negative battery cable (memory for electronic components will be also be canceled).

TROUBLE CODE IDENTIFICATION

Code	Component/System	Most Likely Cause
P0105	Manifold Absolute Pressure/Barometric Pressure (MAP) Sensor Circuit	MAP Sensor
P0106	Manifold Absolute Pressure/Barometric Pressure (MAP) Sensor Circuit	Range/Performance Problem
P0110	Intake Air Temperature (IAT) Sensor Circuit	Open/Short Circuit
P0115	Coolant Temperature Sensor (CTS) Circuit	Open/Short Circuit
P0116	Coolant Temperature Sensor (CTS) Circuit	Range/Performance Problem
P0120	Throttle Position Sensor (TPS) Circuit	Open/Short Circuit
P0121	Throttle Position Sensor (TPS) Circuit	Range/Performance Problem
P0125	Heated Oxygen Sensor	Insufficient Coolant Temperature For Closed Loop Fuel Control
P0130	Heated Oxygen Sensor (Front Sensor)	Sensor Malfunction
P0133	Heated Oxygen Sensor Slow Response	Right Sensor Malfunction
P0135	Heated Oxygen Sensor (Front Sensor)	Open/Short Circuit
P0136	Heated Oxygen Sensor (Rear Sensor)	Open/Short Circuit
P0141	Heated Oxygen Sensor (Rear Sensor)	Open/Short Circuit
P0170	Fuel Trim Malfunction	Too Lean Or Rich
P0300	Random/Multiple Misfire Detected	Miscellaneous
P0301	Cylinder No. 1 Misfire Detected	Miscellaneous
P0302	Cylinder No. 2 Misfire Detected	Miscellaneous
P0303	Cylinder No. 3 Misfire Detected	Miscellaneous
P0304	Cylinder No. 4 Misfire Detected	Miscellaneous
P0305	Cylinder No. 5 Misfire Detected	Miscellaneous
P0306	Cylinder No. 6 Misfire Detected	Miscellaneous
P0325	Knock Sensor No. 1 Circuit	Open/Short Circuit
P0335	Crankshaft Position (CKP) Sensor "A" Circuit	Open/Short Circuit
P0340	Camshaft Position (CMP) Sensor Circuit	Open/Short Circuit
P0401	Insufficient Exhaust Gas Recirculation (EGR) Flow Detected	EGR Valve
P0402	Excessive Exhaust Gas Recirculation (EGR) Flow Detected	EGR Valve
P0420	Catalyst System Efficiency Below Threshold	Catalytic Convert.
P0500	Vehicle Speed Sensor (VSS) Malfunction	Open/Short Circuit
P0505	Idle Air Control (IAC) System Malfunction	IAC Valve
P0510	Closed Throttle Position Switch Malfunction	Throttle Position Sensor
P1300	Igniter Circuit Malfunction	Igniter IGF Or IGT Open/Short Circuit
P1335	Crankshaft Position (CKP) Sensor Circuit	Open/Short Circuit
P1500	Starter Signal Circuit Malfunction	Starter Signal Circuit Open/Short Circuit
P1600	ECM BATT Malfunction	Back-Up Power Source Open Circuit
P1605	Knock Control CPU Malfunction	ECM
P1780	Park/Neutral Position (PNP) Switch Malfunction	Short Circuit

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.

Safety Warning

Clearing Trouble Codes

Use the Manual With the Right Hardware

When to See a Mechanic

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