P219C

Cylinder 1 Air-Fuel Ratio Imbalance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Power Loss
Dips during acceleration
Check Engine Light Illuminates

Causes

Dirty or faulty fuel injectors
Problems with the ignition system in cylinder 1
Vacuum leak in cylinder 1
Oxygen sensor malfunction
Compression problems in cylinder 1

How to Fix

Check the condition of the fuel injectors
Diagnose the ignition system of cylinder 1
Check the tightness of the intake tract
Check the operation of oxygen sensors
Measure compression in cylinder 1

Related codes

P219A P219B P219D