OBD Guide
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P3114

Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High

P3114 is an OBD-II diagnostic trouble code meaning: Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High. Common causes: broken or damaged wires to the injector, oxidation of contacts in connectors. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Misfire in cylinder 4

Causes

  • Broken or damaged wires to the injector
  • Oxidation of contacts in connectors
  • Malfunction of the injector of the 4th cylinder
  • Problems with the engine control unit
  • Short circuit in control circuit

How to Fix

  1. Check the integrity of the wiring harness to the injector
  2. Clean the contacts in the injector connectors
  3. Measure the injector resistance
  4. Check the control signal from the ECU
  5. Replace the faulty injector if necessary

Related codes

P3111P3112P3113

FAQ

What does the P3114 code mean?

P3114 is an OBD-II diagnostic trouble code that indicates: Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High

What causes a P3114 error code?

The most common causes of P3114 include: Broken or damaged wires to the injector; Oxidation of contacts in connectors; Malfunction of the injector of the 4th cylinder; Problems with the engine control unit.

How do I fix a P3114 diagnostic trouble code?

To fix P3114: Check the integrity of the wiring harness to the injector. Clean the contacts in the injector connectors. Measure the injector resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3114?

Limited driving only, diagnose soon

How much does it cost to fix P3114?

The estimated repair cost for P3114 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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