OBD Guide
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C1979

IWE Solenoid Circuit Failure

C1979 is an OBD-II diagnostic trouble code meaning: IWE Solenoid Circuit Failure. Common causes: open or short circuit in wiring harness, iwe solenoid malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Unstable all-wheel drive operation
  • Clicking or knocking noises when moving
  • Check Engine light comes on

Causes

  • Open or short circuit in wiring harness
  • IWE solenoid malfunction
  • Problems with vacuum lines
  • Control unit malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Check solenoid resistance IWE
  3. Inspect vacuum lines for leaks
  4. If necessary, replace the IWE solenoid

Related codes

C1980C1981P0500

FAQ

What does the C1979 code mean?

C1979 is an OBD-II diagnostic trouble code that indicates: IWE Solenoid Circuit Failure

What causes a C1979 error code?

The most common causes of C1979 include: Open or short circuit in wiring harness; IWE solenoid malfunction; Problems with vacuum lines; Control unit malfunction.

How do I fix a C1979 diagnostic trouble code?

To fix C1979: Check the integrity of the wiring harness. Check solenoid resistance IWE. Inspect vacuum lines for leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1979?

Limited driving only, diagnose soon

How much does it cost to fix C1979?

The estimated repair cost for C1979 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat