SAAB WIS ONLINE

P0190

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine on, deteriorated performance.

P0190


Misfire Mechanical Fault


Fault symptom


Check Engine on, deteriorated performance.


Conditions

The following conditions apply for the DTC in question:


The control module has detected a sufficient number of misfires.


Diagnostic help

Anything that causes misfiring can be the cause of the diagnostic trouble code, e.g. deviating combustion in one of the cylinders. This can be due to


leaking high-pressure fuel lines, (line between pump and injectors)

damaged pistons, cylinders or valves

mechanical fault in engine

defective injectors

blocked or leaking fuel bridges (applies to tapered coupling between nozzle and fuel bridge). See method for checking system integrity, 2:3 Fuel system, Adjustment/replacement, Fuel bridge.