OBD Guide
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B1265

Cold Air Bypass Door Actuator Circuit Failure

B1265 is an OBD-II diagnostic trouble code meaning: Cold Air Bypass Door Actuator Circuit Failure. Common causes: open or short circuit in wiring harness, malfunction of the damper actuator solenoid valve. Estimated repair cost: $56–167.

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

Symptoms

  • Deterioration of vehicle dynamics
  • Increased fuel consumption
  • Unstable engine operation at idle

Causes

  • Open or short circuit in wiring harness
  • Malfunction of the damper actuator solenoid valve
  • Mechanical damage to the damper or actuator
  • Problems with the engine control unit (ECU)

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the damper actuator solenoid valve
  3. Inspect the mechanical part of the damper and actuator for damage
  4. If necessary, replace faulty components
  5. Reset the error and check the system operation

Related codes

P0101P0102P0103

FAQ

What does the B1265 code mean?

B1265 is an OBD-II diagnostic trouble code that indicates: Cold Air Bypass Door Actuator Circuit Failure

What causes a B1265 error code?

The most common causes of B1265 include: Open or short circuit in wiring harness; Malfunction of the damper actuator solenoid valve; Mechanical damage to the damper or actuator; Problems with the engine control unit (ECU).

How do I fix a B1265 diagnostic trouble code?

To fix B1265: Check wiring harness for damage. Check the operation of the damper actuator solenoid valve. Inspect the mechanical part of the damper and actuator for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1265?

Limited driving only, diagnose soon

How much does it cost to fix B1265?

The estimated repair cost for B1265 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat