OBD Guide
ENFRDEESPT

C1418

Front Differential Control Circuit High

C1418 is an OBD-II diagnostic trouble code meaning: Front Differential Control Circuit High. Common causes: open or short circuit in wiring harness, differential position sensor 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
  • Deterioration in handling
  • Unstable operation of the all-wheel drive system
  • Power Loss

Causes

  • Open or short circuit in wiring harness
  • Differential position sensor malfunction
  • Problems with the differential control unit
  • Corrosion of contacts or connectors
  • Differential solenoid valve malfunction

How to Fix

  1. Check wiring harness for damage
  2. Check contacts and connectors for corrosion
  3. Test differential position sensor
  4. Check the operation of the solenoid valve
  5. If necessary, replace faulty components
  6. Reset the error and take a test drive

Related codes

C1417C1419C1420

FAQ

What does the C1418 code mean?

C1418 is an OBD-II diagnostic trouble code that indicates: Front Differential Control Circuit High

What causes a C1418 error code?

The most common causes of C1418 include: Open or short circuit in wiring harness; Differential position sensor malfunction; Problems with the differential control unit; Corrosion of contacts or connectors.

How do I fix a C1418 diagnostic trouble code?

To fix C1418: Check wiring harness for damage. Check contacts and connectors for corrosion. Test differential position sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1418?

Limited driving only, diagnose soon

How much does it cost to fix C1418?

The estimated repair cost for C1418 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat