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
This DTC indicates the BCM is receiving incorrect data from Passlock(R) sensor. DTC B3033 will set when ignition 0 is active and Passlock(R) data voltage is incorrect for 3 consecutive data reads (approximately 1 second). When DTC sets the BCM will enter tamper mode. The vehicle will not start and the SECURITY indicator will flash for 10 minutes.
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.