P02A3

Cylinder 3 - Fuel Trim at Min Limit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Power reduction
Increased fuel consumption
Misfire in cylinder 3

Causes

Air leak in the intake tract
Dirty or faulty fuel injectors
Malfunction of the mass air flow sensor (MAF)
Problems with the absolute pressure (MAP) sensor
Exhaust gas recirculation (EGR) system malfunction

How to Fix

Check the tightness of the intake tract
Clean or replace fuel injectors
Check the operation of the mass air flow sensor and MAP
Diagnose the EGR system
Check the fuel pump and system pressure

Related codes

P0171 P0172 P0303