OBD Guide
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C140D

Transfer Case Motor Control Circuit Open

C140D is an OBD-II diagnostic trouble code meaning: Transfer Case Motor Control Circuit Open. Common causes: open or short circuit in wiring harness, transfer case motor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Check Engine Light Is On
  • Problems with switching all-wheel drive modes
  • Transfer case does not respond to commands

Causes

  • Open or short circuit in wiring harness
  • Transfer case motor malfunction
  • Problems with the control relay
  • Contact corrosion
  • Transfer case control unit malfunction

How to Fix

  1. Check wiring harness for damage
  2. Check motor resistance
  3. Check the operation of the control relay
  4. Clean contacts from corrosion
  5. Scan the control unit for additional errors

Related codes

C140EC140FC1410

FAQ

What does the C140D code mean?

C140D is an OBD-II diagnostic trouble code that indicates: Transfer Case Motor Control Circuit Open

What causes a C140D error code?

The most common causes of C140D include: Open or short circuit in wiring harness; Transfer case motor malfunction; Problems with the control relay; Contact corrosion.

How do I fix a C140D diagnostic trouble code?

To fix C140D: Check wiring harness for damage. Check motor resistance. Check the operation of the control relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C140D?

Limited driving only, diagnose soon

How much does it cost to fix C140D?

The estimated repair cost for C140D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat