C0406
Transfer Case Solenoid Valve Control Circuit High Current
C0406 is an OBD-II diagnostic trouble code meaning: Transfer Case Solenoid Valve Control Circuit High Current. Common causes: short circuit in solenoid control circuit, transfer case solenoid malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Incorrect all-wheel drive operation
- Transfer case transition to emergency mode
- Reduced efficiency of the all-wheel drive system
Causes
- Short circuit in solenoid control circuit
- Transfer case solenoid malfunction
- Wiring harness damage
- Problems with the transfer case control module (TCCM)
- Corrosion of contacts or connectors
How to Fix
- Check the integrity of the wiring harness and connectors
- Measure the solenoid resistance (compare with the norm)
- Check control circuit for short circuit
- Replace solenoid if necessary
- Flash or replace the control unit (TCCM) if a malfunction is detected
Related codes
Error C0406 by Vehicle Brand
FAQ
What does the C0406 code mean?
C0406 is an OBD-II diagnostic trouble code that indicates: Transfer Case Solenoid Valve Control Circuit High Current
What causes a C0406 error code?
The most common causes of C0406 include: Short circuit in solenoid control circuit; Transfer case solenoid malfunction; Wiring harness damage; Problems with the transfer case control module (TCCM).
How do I fix a C0406 diagnostic trouble code?
To fix C0406: Check the integrity of the wiring harness and connectors. Measure the solenoid resistance (compare with the norm). Check control circuit for short circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0406?
Limited driving only, diagnose soon
How much does it cost to fix C0406?
The estimated repair cost for C0406 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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