OBD Guide

P02A9

Cylinder 4 - Injector Leaking

P02A9 is an OBD-II diagnostic trouble code meaning: Cylinder 4 - Injector Leaking. Common causes: worn injector seals, mechanical damage to the injector. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Misfire in cylinder 4
  • Increased fuel consumption
  • Unstable engine idling
  • Smell of gasoline from the engine compartment

Causes

  • Worn injector seals
  • Mechanical damage to the injector
  • Nozzle contamination
  • Problems with the electrical connection of the injector

How to Fix

  1. Check the condition of the injector of the 4th cylinder
  2. Replace injector seals if necessary
  3. Clean or replace the injector
  4. Check the electrical connection of the injector
  5. Reset the error and take a test drive

Related codes

Error P02A9 by Vehicle Brand

FAQ

What does the P02A9 code mean?

P02A9 is an OBD-II diagnostic trouble code that indicates: Cylinder 4 - Injector Leaking

What causes a P02A9 error code?

The most common causes of P02A9 include: Worn injector seals; Mechanical damage to the injector; Nozzle contamination; Problems with the electrical connection of the injector.

How do I fix a P02A9 diagnostic trouble code?

To fix P02A9: Check the condition of the injector of the 4th cylinder. Replace injector seals if necessary. Clean or replace the injector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P02A9?

Limited driving only, diagnose soon

How much does it cost to fix P02A9?

The estimated repair cost for P02A9 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat