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.
Circuit Description
If the BCM has been replaced, the password must be relearned using special equipment. If PCM is replaced, the replacement PCM should relearn the password within a few seconds after ignition is turned on. Engine will start and continue to run with DTC P1630 set. See the ANTI-THEFT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT section.
Conditions for setting DTC:
- PASS-Key(R) III system has allowed fuel delivery.
- PCM is theft deterrent password learn mode.
NO RELATED
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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.