OBD Guide
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P1379

Fuel Injection Control Module Circuit High Voltage

P1379 is an OBD-II diagnostic trouble code meaning: Fuel Injection Control Module Circuit High Voltage. Common causes: malfunction of the injection control module, wiring harness damage. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Power Loss
  • Misfires
  • Check Engine Light Illuminates

Causes

  • Malfunction of the injection control module
  • Wiring harness damage
  • Short circuit in the circuit
  • Relay or fuse problems
  • Generator malfunction (overcharge)

How to Fix

  1. Check the condition of the injection module wiring harness
  2. Measure the voltage in the module circuit
  3. Check generator operation
  4. Test the injection control module
  5. Replace faulty components

Related codes

P1378P1380P1381

FAQ

What does the P1379 code mean?

P1379 is an OBD-II diagnostic trouble code that indicates: Fuel Injection Control Module Circuit High Voltage

What causes a P1379 error code?

The most common causes of P1379 include: Malfunction of the injection control module; Wiring harness damage; Short circuit in the circuit; Relay or fuse problems.

How do I fix a P1379 diagnostic trouble code?

To fix P1379: Check the condition of the injection module wiring harness. Measure the voltage in the module circuit. Check generator operation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1379?

Limited driving only, diagnose soon

How much does it cost to fix P1379?

The estimated repair cost for P1379 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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