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.
PCM Reset
After a PCM reset procedure, the following conditions will be met:
- All DTCs cleared from PCM memory.
- All freeze frame data cleared from PCM memory.
- All oxygen sensor test data cleared from PCM memory.
- OBD-II system monitor status is reset.
- DTC P1000 set in PCM memory.
To perform PCM reset using NGS scan tester, ensure connectors are properly connected. Program scan tester using the following steps:
- Select vehicle and engine selection menu (optional). See Figure.
- Select year, engine, model and any additional information requested by scan tester (optional).
- Follow operating instructions from scan tester menu.
- Select GENERIC OBD-II FUNCTIONS. Press CONT button if monitors are not complete.
- Turn ignition on.
- Select CLEAR DIAGNOSTIC CODES.
All codes should now be cleared from PCM memory. If problem has not been corrected or fault is still present, hard code will immediately be reset in PCM memory.
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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.