What does fault code ECM-P030598 mean?

Diagnostic fault code details for ECM-P030598 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo S80 (2007–)). Repair service at OBD Tuning.

VOLVO

ECM-P030598 - Cylinder 5 Misfire Detected. Component Failures. Component or system over temperature

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

3 models

S60 (2011–), S80 (2007–), V70 (2008–)

Show models by year and engine (9)

What does this fault code mean?

Cylinder 5 misfires in a way that can damage the catalytic converter, and the engine control module (ECM) sets the fault code early after the engine starts. The result can be an overheated catalytic converter, and the code shows that cylinder 5 is the one misfiring.

Possible causes

Incorrect fuel pressure
Contaminated or incorrect fuel
Air leak
Damaged VVT unit
Clogged crankcase ventilation
Uneven compression

What you can do

1Read the fault codes; camshaft codes are traced first
2Check that the fuel suits the season and that the fuel level is sufficient
3Check that the crankcase ventilation is not clogged and that the intake air system does not leak
4If you have a diagnostic tool: read the misfire counter for cylinder 5 in live data with the engine running and see whether it is higher than for the other cylinders
5Have a workshop with diagnostic equipment check the VVT unit, the fuel pressure and the compression on cylinder 5

Symptoms you may notice5

The engine starts with difficulty
Uneven idle
The engine lacks power
The engine jerks or hesitates when driven
The Check engine light lights up or behaves abnormally

What the fault can affect2

Rear oxygen sensor control is switched off
Lambda control is switched off

General guidance for car owners. Diagnosis on the car can point to a different cause.