OBD Guide
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B10AC

Right Blend Door Control Circuit Open

B10AC is an OBD-II diagnostic trouble code meaning: Right Blend Door Control Circuit Open. Common causes: break in the wiring harness, solenoid valve malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect air supply to the cabin
  • Temperature control on the right side does not work
  • The climate control system only works in one mode

Causes

  • Break in the wiring harness
  • Solenoid valve malfunction
  • Damper drive failure

How to Fix

  1. Check wiring harness for damage
  2. Test the solenoid valve
  3. Replace the damper actuator if necessary

Related codes

B10ADB10AE

FAQ

What does the B10AC code mean?

B10AC is an OBD-II diagnostic trouble code that indicates: Right Blend Door Control Circuit Open

What causes a B10AC error code?

The most common causes of B10AC include: Break in the wiring harness; Solenoid valve malfunction; Damper drive failure.

How do I fix a B10AC diagnostic trouble code?

To fix B10AC: Check wiring harness for damage. Test the solenoid valve. Replace the damper actuator if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B10AC?

Limited driving only, diagnose soon

How much does it cost to fix B10AC?

The estimated repair cost for B10AC is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat