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If code PID 190 is displayed, the engine has been over speeding. The engine could be running on engine oil from a faulty crankcase oil filter or worn engine piston rings. The engine speed will be limited to approximately 1200 rpm and the (VCB) Volvo Compression Brake will be activated to lower the engine speed. Diagnose and repair the engine over speed condition.
Conditions for diagnostic trouble code (DTC):
1) Engine speed too high
Observable symptoms
1) Unit Injector, Cut-Out
Probable cause
1) Wrong gear may be engaged (when engine braking)
2) The engine is running on engine oil
Detailed information
1) The diagnostic trouble code (DTC) will be removed when the engine speed is below deactivation limit
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