OBD Guide

P02AC

Cylinder 5 - Injector Restricted

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Loss of engine power
  • Misfire in cylinder 5
  • Increased engine vibration
  • Unstable idle

Causes

  • Dirty or clogged nozzle
  • Problems in the injector electrical circuit
  • Low fuel pressure
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the fuel pressure in the system
  2. Test the injector electrical circuit
  3. Clean or replace the injector
  4. Check the operation of the engine control unit (ECU)

Related codes

Error P02AC by Vehicle Brand