P234F

Cylinder 9 Pressure Variation Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–167 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Misfires
Unstable engine idling
Difficulty starting the engine

Causes

Low cylinder compression
Fuel injector malfunction
Problems with spark plugs or coils
Piston ring wear
Malfunction of the cylinder pressure sensor

How to Fix

Check compression in cylinder
Check the condition of the fuel injectors
Replace spark plugs and coils
Check the tightness of the cylinder and the condition of the piston rings
Check cylinder pressure sensor

Related codes

P234E P2350 P2351