P03B8

Cylinder 4 Pressure Too Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Unstable engine operation
Power Loss
Increased fuel consumption
Misfires
Engine vibration

Causes

Piston ring wear
Malfunction of cylinder valves
Problems with the fuel injector
Damage to the cylinder head gasket
Worn or damaged cylinder

How to Fix

Check compression in cylinder 4
Inspect valves and piston rings
Check the operation of the fuel injector
Inspect the cylinder head gasket for damage
If necessary, replace worn parts

Related codes

P0300 P0304 P017ighth my P0172