OBD Guide
ENFRDEESPT

B12A2

Passenger Blend Door Actuator Slow Or Door Obstructed

B12A2 is an OBD-II diagnostic trouble code meaning: Passenger Blend Door Actuator Slow Or Door Obstructed. Common causes: mechanical jamming of the damper, wear of actuator gears. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect passenger side air temperature
  • Noises during climate control operation
  • The damper does not respond to settings changes

Causes

  • Mechanical jamming of the damper
  • Wear of actuator gears
  • Problems with the electric motor
  • Wiring harness damage
  • Climate control unit software error

How to Fix

  1. Diagnostics of damper operation
  2. Checking electrical connections
  3. Cleaning the damper mechanism
  4. Replacing the actuator if necessary
  5. Resetting the error and checking the system operation

Related codes

B12A1B12A3B12A4

FAQ

What does the B12A2 code mean?

B12A2 is an OBD-II diagnostic trouble code that indicates: Passenger Blend Door Actuator Slow Or Door Obstructed

What causes a B12A2 error code?

The most common causes of B12A2 include: Mechanical jamming of the damper; Wear of actuator gears; Problems with the electric motor; Wiring harness damage.

How do I fix a B12A2 diagnostic trouble code?

To fix B12A2: Diagnostics of damper operation. Checking electrical connections. Cleaning the damper mechanism. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B12A2?

Yes, but get it checked soon

How much does it cost to fix B12A2?

The estimated repair cost for B12A2 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat