P02AA

Cylinder 5 - Fuel Trim at Max Limit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Reduced engine power
Misfire in cylinder 5

Causes

Dirty or faulty injector of cylinder 5
Air leak in intake manifold
Malfunction of the oxygen sensor (lambda probe)
Problems with the mass air flow sensor (MAF)
Exhaust gas recirculation (EGR) system malfunction

How to Fix

Check the injector of cylinder 5 for contamination or malfunction
Check the tightness of the intake manifold and pipes
Check the operation of the oxygen sensor and mass air flow sensor
Clean or replace the nozzle if necessary
Check the EGR system for malfunctions

Related codes

P0172 P0175 P0305