OBD Guide
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P124C

Injector 5 Positive Voltage Control Circuit Shorted to Control Circuit

P124C is an OBD-II diagnostic trouble code meaning: Injector 5 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?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Misfire in cylinder 5
  • Check Engine Light Illuminates
  • Reduced engine power

Causes

  • Damage to the injector wiring harness
  • Short circuit in control circuit
  • Fuel 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 the injector resistance
  3. Check the voltage at the injector connector
  4. Replace the faulty injector if necessary
  5. Check the operation of the engine control unit

Related codes

P0205P0265P062D

FAQ

What does the P124C code mean?

P124C is an OBD-II diagnostic trouble code that indicates: Injector 5 Positive Voltage Control Circuit Shorted to Control Circuit

What causes a P124C error code?

The most common causes of P124C include: Damage to the injector wiring harness; Short circuit in control circuit; Fuel injector malfunction; Problems with the engine control unit.

How do I fix a P124C diagnostic trouble code?

To fix P124C: Check the integrity of the injector wiring harness. Measure the injector resistance. Check the voltage at the injector connector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P124C?

Yes, but get it checked soon

How much does it cost to fix P124C?

The estimated repair cost for P124C is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat