B27A9
Mode Door Motor
B27A9 is an OBD-II diagnostic trouble code meaning: Mode Door Motor. Common causes: jamming of the damper mechanism, damper motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Inability to switch fan modes
- Noise or clicking noise from the climate control area
- Flap jammed in one position
- Incorrect operation of the climate control system
Causes
- Jamming of the damper mechanism
- Damper motor malfunction
- Wiring Harness Problems
- Open or short circuit in control circuit
- Malfunction of the climate control control unit
How to Fix
- Check the damper mechanism for jamming
- Check the integrity of the wiring harness and connectors
- Check the performance of the damper motor
- Replace faulty damper motor
- Check the climate control control unit
Related codes
FAQ
What does the B27A9 code mean?
B27A9 is an OBD-II diagnostic trouble code that indicates: Mode Door Motor
What causes a B27A9 error code?
The most common causes of B27A9 include: Jamming of the damper mechanism; Damper motor malfunction; Wiring Harness Problems; Open or short circuit in control circuit.
How do I fix a B27A9 diagnostic trouble code?
To fix B27A9: Check the damper mechanism for jamming. Check the integrity of the wiring harness and connectors. Check the performance of the damper motor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B27A9?
Yes, but get it checked soon
How much does it cost to fix B27A9?
The estimated repair cost for B27A9 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat