OBD Guide

P124A

Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit

P124A is an OBD-II diagnostic trouble code meaning: Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit. Common causes: damage to the injector wiring harness, short circuit in control circuit. 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
  • Misfire in cylinder 3
  • Increased fuel consumption
  • Reduced engine power
  • Check Engine Light Illuminates

Causes

  • Damage to the injector wiring harness
  • Short circuit in control circuit
  • Cylinder 3 injector malfunction
  • Problems with the engine control unit
  • Corrosion of electrical contacts

How to Fix

  1. Check the integrity of the injector wiring harness
  2. Measure resistance and voltage in the control circuit
  3. Check the operation of the injector of cylinder 3
  4. Inspect and clean electrical contacts
  5. If necessary, replace the injector or wiring harness

Related codes

FAQ

What does the P124A code mean?

P124A is an OBD-II diagnostic trouble code that indicates: Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit

What causes a P124A error code?

The most common causes of P124A include: Damage to the injector wiring harness; Short circuit in control circuit; Cylinder 3 injector malfunction; Problems with the engine control unit.

How do I fix a P124A diagnostic trouble code?

To fix P124A: Check the integrity of the injector wiring harness. Measure resistance and voltage in the control circuit. Check the operation of the injector of cylinder 3. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P124A?

Limited driving only, diagnose soon

How much does it cost to fix P124A?

The estimated repair cost for P124A is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat