B0446
Right Air Temperature Actuator
B0446 is an OBD-II diagnostic trouble code meaning: Right Air Temperature Actuator. Common causes: actuator jamming, open or short circuit in control circuit. Estimated repair cost: $56–167.
Symptoms
- Uneven airflow on the right side of the cabin
- Inability to adjust temperature on the right side
- Constantly hot or cold air on the right side
Causes
- Actuator jamming
- Open or short circuit in control circuit
- Servo motor malfunction
- Problems with the climate control unit
- Oxidation of contacts in connectors
How to Fix
- Check the integrity of the wiring harness to the actuator
- Check the resistance of the motor windings
- Clean and lubricate the damper drive mechanism
- Check the operation of the mechanism manually
- Replace faulty actuator
- Check the operation of the climate control unit
Related codes
Error B0446 by Vehicle Brand
FAQ
What does the B0446 code mean?
B0446 is an OBD-II diagnostic trouble code that indicates: Right Air Temperature Actuator
What causes a B0446 error code?
The most common causes of B0446 include: Actuator jamming; Open or short circuit in control circuit; Servo motor malfunction; Problems with the climate control unit.
How do I fix a B0446 diagnostic trouble code?
To fix B0446: Check the integrity of the wiring harness to the actuator. Check the resistance of the motor windings. Clean and lubricate the damper drive mechanism. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0446?
Yes, but get it checked soon
How much does it cost to fix B0446?
The estimated repair cost for B0446 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat