B12A0
Passenger Blend Door Actuator Feedback Circuit Open Or Shorted To Battery Voltage
B12A0 is an OBD-II diagnostic trouble code meaning: Passenger Blend Door Actuator Feedback Circuit Open Or Shorted To Battery Voltage. Common causes: broken wire in the feedback circuit, short circuit to battery positive. Estimated repair cost: $56–167.
Symptoms
- Inability to adjust temperature on passenger side
- Constant flow of hot or cold air on the passenger side
- Warming or flashing climate control system indicator
Causes
- Broken wire in the feedback circuit
- Short circuit to battery positive
- Mixer damper drive malfunction
- Problems in the wiring harness
- Malfunction of the climate control control unit
How to Fix
- Check the integrity of the feedback circuit
- Check the resistance of the mixer damper drive
- Check the voltage in the feedback circuit
- Check wiring harness for damage
- Replace the mixer damper drive if necessary
- Check the integrity of connectors and contacts
Related codes
FAQ
What does the B12A0 code mean?
B12A0 is an OBD-II diagnostic trouble code that indicates: Passenger Blend Door Actuator Feedback Circuit Open Or Shorted To Battery Voltage
What causes a B12A0 error code?
The most common causes of B12A0 include: Broken wire in the feedback circuit; Short circuit to battery positive; Mixer damper drive malfunction; Problems in the wiring harness.
How do I fix a B12A0 diagnostic trouble code?
To fix B12A0: Check the integrity of the feedback circuit. Check the resistance of the mixer damper drive. Check the voltage in the feedback circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B12A0?
Yes, but get it checked soon
How much does it cost to fix B12A0?
The estimated repair cost for B12A0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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