B12AD
Passenger Heated Seat Relay Drive Circuit Shorted To Battery Voltage
B12AD is an OBD-II diagnostic trouble code meaning: Passenger Heated Seat Relay Drive Circuit Shorted To Battery Voltage. Common causes: damaged wiring harness insulation, short circuit in the heating relay. Estimated repair cost: $22–89.
Symptoms
- Heated passenger seat does not work
- Error indication on the instrument panel
- False activation of comfort systems
Causes
- Damaged wiring harness insulation
- Short circuit in the heating relay
- Malfunction of the heating control unit
- Corrosion of contacts in connectors
How to Fix
- Visual inspection of the wiring harness in the seat area
- Checking Relay Control Circuit Resistance
- Diagnostics of the heating relay operation
- Checking contacts on the control unit
- Replacing damaged components
Related codes
FAQ
What does the B12AD code mean?
B12AD is an OBD-II diagnostic trouble code that indicates: Passenger Heated Seat Relay Drive Circuit Shorted To Battery Voltage
What causes a B12AD error code?
The most common causes of B12AD include: Damaged wiring harness insulation; Short circuit in the heating relay; Malfunction of the heating control unit; Corrosion of contacts in connectors.
How do I fix a B12AD diagnostic trouble code?
To fix B12AD: Visual inspection of the wiring harness in the seat area. Checking Relay Control Circuit Resistance. Diagnostics of the heating relay operation. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B12AD?
Yes, but get it checked soon
How much does it cost to fix B12AD?
The estimated repair cost for B12AD is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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