P02A4

Cylinder 3 - Injector Restricted

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Misfire in cylinder 3
Reduced engine power
Increased fuel consumption
Unstable idling
Smell of unburned fuel from the exhaust system

Causes

Nozzle clogged
Nozzle wear
Power problems (open or short circuit in wiring harness)
Malfunction of the control signal from the ECU
Low fuel pressure

How to Fix

Check the condition of the injector (contamination, wear)
Test the injector electrical circuit (resistance, voltage)
Clean or replace the injector
Check fuel pressure
Check wiring harness and connectors for damage

Related codes

P0303 P0203 P0171 P0172