P236E

Cylinder 12 Pressure Variation High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$22–167 (est.)

Symptoms

Uneven engine idle
Power Loss
Increased fuel consumption
Engine vibration
Check Engine Indication

Causes

Compression problems in the cylinder
Worn piston rings
Fuel injector malfunction
Problems with valves (stuck, burnout)
Defective ignition system (plugs, coils)

How to Fix

Check compression in cylinder
Inspect the condition of the spark plugs
Diagnose fuel injector operation
Check hydraulic compensators and valve mechanism
Analyze the readings of the cylinder pressure sensor (if equipped)

Related codes

P0300 P0301 P0302