P0190
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Check Engine on, deteriorated performance.
Misfire Mechanical Fault
Fault symptom
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Check Engine on, deteriorated performance.
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Conditions
The following conditions apply for the DTC in question:
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The control module has detected a sufficient number of misfires.
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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
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leaking high-pressure fuel lines, (line between pump and injectors)
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damaged pistons, cylinders or valves
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mechanical fault in engine
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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.
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