OBD Guide

P3106

Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High

P3106 is an OBD-II diagnostic trouble code meaning: Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High. Common causes: short circuit in the injector circuit to positive, broken or damaged wiring to the injector. Estimated repair cost: $33–167.

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

Symptoms

  • Rough engine idling
  • Misfire in cylinder 2
  • Increased fuel consumption
  • Check Engine light comes on
  • Reduced engine power

Causes

  • Short circuit in the injector circuit to positive
  • Broken or damaged wiring to the injector
  • Fuel injector malfunction
  • Problems with the injector connector
  • Engine control unit malfunction

How to Fix

  1. Visual inspection of injector wiring and connectors
  2. Checking the injector circuit resistance
  3. Injector voltage measurement
  4. Replacing a faulty fuel injector
  5. Repair or replace damaged wiring

Related codes

FAQ

What does the P3106 code mean?

P3106 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High

What causes a P3106 error code?

The most common causes of P3106 include: Short circuit in the injector circuit to positive; Broken or damaged wiring to the injector; Fuel injector malfunction; Problems with the injector connector.

How do I fix a P3106 diagnostic trouble code?

To fix P3106: Visual inspection of injector wiring and connectors. Checking the injector circuit resistance. Injector voltage measurement. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3106?

Limited driving only, diagnose soon

How much does it cost to fix P3106?

The estimated repair cost for P3106 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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