B297A
Blend Door Actuator Drive Circuit Open
B297A is an OBD-II diagnostic trouble code meaning: Blend Door Actuator Drive Circuit Open. Common causes: open or short circuit in wiring harness, damper motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Inability to adjust air temperature
- Constant supply of only hot or only cold air
- Clicking or knocking noises from the damper area
Causes
- Open or short circuit in wiring harness
- Damper motor malfunction
- Problems with the climate control unit
- Mechanical jamming of the damper
How to Fix
- Check the integrity of the wiring harness to the damper actuator
- Check resistance and power at drive connector
- Replace faulty damper actuator
- Test the operation of the system after repair
FAQ
What does the B297A code mean?
B297A is an OBD-II diagnostic trouble code that indicates: Blend Door Actuator Drive Circuit Open
What causes a B297A error code?
The most common causes of B297A include: Open or short circuit in wiring harness; Damper motor malfunction; Problems with the climate control unit; Mechanical jamming of the damper.
How do I fix a B297A diagnostic trouble code?
To fix B297A: Check the integrity of the wiring harness to the damper actuator. Check resistance and power at drive connector. Replace faulty damper actuator. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B297A?
Yes, but get it checked soon
How much does it cost to fix B297A?
The estimated repair cost for B297A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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