OBD Guide
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P3105

Cylinder 2 High-Pressure Fuel Injector Low Side Circuit Low

P3105 is an OBD-II diagnostic trouble code meaning: Cylinder 2 High-Pressure Fuel Injector Low Side Circuit Low. Common causes: open or short circuit in the injector wiring harness, cylinder 2 injector malfunction. Estimated repair cost: $33–167.

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

Symptoms

  • Misfire in cylinder 2
  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Open or short circuit in the injector wiring harness
  • Cylinder 2 injector malfunction
  • Problems with the injector connector
  • Engine control unit malfunction
  • Poor ground connection

How to Fix

  1. Check the integrity of the injector wiring harness
  2. Check the resistance of the injector of cylinder 2
  3. Inspect the injector connector for damage.
  4. Check ground connections
  5. If necessary, replace the injector

Related codes

P3100P3106P3107

FAQ

What does the P3105 code mean?

P3105 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 High-Pressure Fuel Injector Low Side Circuit Low

What causes a P3105 error code?

The most common causes of P3105 include: Open or short circuit in the injector wiring harness; Cylinder 2 injector malfunction; Problems with the injector connector; Engine control unit malfunction.

How do I fix a P3105 diagnostic trouble code?

To fix P3105: Check the integrity of the injector wiring harness. Check the resistance of the injector of cylinder 2. Inspect the injector connector for damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3105?

Limited driving only, diagnose soon

How much does it cost to fix P3105?

The estimated repair cost for P3105 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat