OBD Guide
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C140C

Transfer Case Motor Performance Circuit High

C140C is an OBD-II diagnostic trouble code meaning: Transfer Case Motor Performance Circuit High. Common causes: open or shorted wiring harness, transfer case motor malfunction. Estimated repair cost: $56–222.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Inability to switch transfer modes
  • The all-wheel drive warning light comes on
  • Errors in the all-wheel drive system

Causes

  • Open or shorted wiring harness
  • Transfer case motor malfunction
  • Oxidation of contacts
  • Problems with the transfer case control unit

How to Fix

  1. Diagnostics with a scanner to accurately determine the malfunction
  2. Checking the integrity of the wiring harness
  3. Checking the condition of the transfer case electric motor
  4. Replacing faulty components

Related codes

C140AC140BC140D

FAQ

What does the C140C code mean?

C140C is an OBD-II diagnostic trouble code that indicates: Transfer Case Motor Performance Circuit High

What causes a C140C error code?

The most common causes of C140C include: Open or shorted wiring harness; Transfer case motor malfunction; Oxidation of contacts; Problems with the transfer case control unit.

How do I fix a C140C diagnostic trouble code?

To fix C140C: Diagnostics with a scanner to accurately determine the malfunction. Checking the integrity of the wiring harness. Checking the condition of the transfer case electric motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C140C?

Limited driving only, diagnose soon

How much does it cost to fix C140C?

The estimated repair cost for C140C is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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