P039E

Cylinder 1 Combustion Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Misfires
Power Loss
Uneven engine operation
Increased fuel consumption

Causes

Faulty spark plug
Problems with the ignition coil
Dirty or faulty injector
Low cylinder compression
Problems with the fuel system

How to Fix

Check the condition of the spark plug in cylinder 1
Test the ignition coil
Check the operation of the injector
Measure the compression in the cylinder
Check the fuel system and ignition system

Related codes

P0301 P0300 P0171 P0172