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.
DTC P1630: Theft Deterrent System Learn Mode Active: Description
If Body Control Module (BCM) has been replaced, password must be relearned. If Powertrain Control Module (PCM) is replaced, PCM should learn Vehicle Theft Deterrent (VTD) password within a few seconds after ignition switch is turned to RUN position. DTC P1630 is an information code indicating that PCM is ready to learn VTD password.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.