OBD Guide

C00A6

4WD/AWD Transfer Case Unit Actuator

C00A6 is an OBD-II diagnostic trouble code meaning: 4WD/AWD Transfer Case Unit Actuator. Common causes: malfunction of the solenoid valve (solenoid), open or shorted wiring harness. Estimated repair cost: $167–556.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Check Engine light comes on
  • Problems with switching drive modes
  • The car goes into emergency mode
  • Reduced all-wheel drive efficiency

Causes

  • Malfunction of the solenoid valve (solenoid)
  • Open or shorted wiring harness
  • Mechanical failure of the actuator
  • Problems with the transfer box control unit

How to Fix

  1. Check the wiring harness for damage
  2. Test the solenoid valve
  3. Inspect the mechanism for mechanical damage
  4. Check the transfer case control unit
  5. Replace faulty components

Related codes

Error C00A6 by Vehicle Brand

FAQ

What does the C00A6 code mean?

C00A6 is an OBD-II diagnostic trouble code that indicates: 4WD/AWD Transfer Case Unit Actuator

What causes a C00A6 error code?

The most common causes of C00A6 include: Malfunction of the solenoid valve (solenoid); Open or shorted wiring harness; Mechanical failure of the actuator; Problems with the transfer box control unit.

How do I fix a C00A6 diagnostic trouble code?

To fix C00A6: Check the wiring harness for damage. Test the solenoid valve. Inspect the mechanism for mechanical damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C00A6?

Limited driving only, diagnose soon

How much does it cost to fix C00A6?

The estimated repair cost for C00A6 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat