OBD Guide
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B11C9

Right Temperature Door Travel Too Small

B11C9 is an OBD-II diagnostic trouble code meaning: Right Temperature Door Travel Too Small. Common causes: mechanical jamming of the damper, damper actuator malfunction. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Uneven airflow on the right and left sides of the cabin
  • Insufficient heating/cooling on the right side
  • Noises during climate control operation

Causes

  • Mechanical jamming of the damper
  • Damper actuator malfunction
  • Wiring Harness Problems
  • Climate control unit error

How to Fix

  1. Diagnostics of damper operation via scanner
  2. Checking the mechanical movement of the damper manually
  3. Electric drive testing
  4. Checking the integrity of the wiring harness
  5. Replacing a faulty component
  6. Resetting the error and checking the system operation

Related codes

B11C8B11CAB11CB

FAQ

What does the B11C9 code mean?

B11C9 is an OBD-II diagnostic trouble code that indicates: Right Temperature Door Travel Too Small

What causes a B11C9 error code?

The most common causes of B11C9 include: Mechanical jamming of the damper; Damper actuator malfunction; Wiring Harness Problems; Climate control unit error.

How do I fix a B11C9 diagnostic trouble code?

To fix B11C9: Diagnostics of damper operation via scanner. Checking the mechanical movement of the damper manually. Electric drive testing. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B11C9?

Yes, but get it checked soon

How much does it cost to fix B11C9?

The estimated repair cost for B11C9 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat