OBD Guide

P02DB

Cylinder 8 Fuel Injector A Offset Learning At Max Limit

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$44–389 (est.)

Symptoms

  • Misfire in cylinder 8
  • Vibration and rough engine operation
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Exhaust smoke (for diesel engines)

Causes

  • Wear of the injector nozzle of cylinder 8
  • Injector clogged with fuel deposits
  • Low fuel pressure in the rail
  • Contaminated or poor quality fuel
  • Degradation of injector components due to long-term use

How to Fix

  1. Read codes and check adaptation data of all injectors
  2. Carry out ultrasonic cleaning of the injector of cylinder 8
  3. Replace the fuel filter and check the fuel quality
  4. Check the pressure in the fuel rail
  5. Reset ECU adaptation and relearn injectors
  6. If the code appears again, replace the injector of cylinder 8

Related codes

Error P02DB by Vehicle Brand