P231E

Cylinder 11 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–133 (est.)

Symptoms

Uneven engine operation
Increased vibrations
Reduced engine power
Increased fuel consumption
Check Engine Light Is On

Causes

Dirty or faulty fuel injectors
Problems with the ignition system (plugs, coils)
Vacuum leaks in the area of cylinder 11
Oxygen sensor malfunction
Compression problems in cylinder 11

How to Fix

Check the condition of the fuel injectors, clean or replace if necessary.
Check the ignition system (spark plugs, coils) of cylinder 11
Check the tightness of the intake tract for vacuum leaks
Check oxygen sensor readings
Measure compression in cylinder 11

Related codes

P231F P231D P0300