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 B2202, Driver's Door Unlock Circuit (Short To Ground Or Open): Notes
When BCM receives driver door unlock request from door lock switches or RKE transmitter, it supplies ground through circuit No. 1391 (Light Green wire) to energize door lock relay.
DTC B2202 will set when BCM detects a short to ground or open in circuit No. 1391 (Light Green wire). No driver warning message will be displayed.
If conditions for malfunction no longer exist, history DTC will clear after 100 consecutive ignition cycles. DTC B2202 will also clear when conditions no longer exist or scan tool is used to clear codes.
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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.