When ignition key is turned to OFF position the selective catalytic reduction (SCR) system enters afterrun mode. During afterrun, system attempts to drain diesel exhaust fluid (DEF) from the DEF dosing valve, DEF pump and DEF lines. Aftertreatment control module (ACM) activates DEF return valve by grounding the control wire (-). When the return valve is activated, the DEF reverses flow back to the tank, and DEF dosing pressure is expected to drop. If the dosing pressure does not drop or if it increases during afterrun, the return valve is considered to have a mechanical fault. Conditions for diagnostic trouble...

When ignition key is turned to OFF position the selective catalytic reduction (SCR) system enters afterrun mode. During afterrun, system attempts to drain diesel exhaust fluid (DEF) from the DEF dosing valve, DEF pump and DEF lines. Aftertreatment control module (ACM) activates DEF return valve by grounding the control wire (-). When the return valve is activated, the DEF reverses flow back to the tank, and DEF dosing pressure is expected to drop. If the dosing pressure does not drop or if it increases during afterrun, the return valve is considered to have a mechanical fault. Conditions for diagnostic trouble...

When ignition key is turned to OFF position the selective catalytic reduction (SCR) system enters afterrun mode. During afterrun, system attempts to drain diesel exhaust fluid (DEF) from the DEF dosing valve, DEF pump and DEF lines. Aftertreatment control module (ACM) activates DEF return valve by grounding the control wire (-). When the return valve is activated, the DEF reverses flow back to the tank, and DEF dosing pressure is expected to drop. If the dosing pressure does not drop or if it increases during afterrun, the return valve is considered to have a mechanical fault. Conditions for diagnostic trouble...

This function monitors the efficiency of the exhaust gas recirculation (EGR) cooler. The EGR cooler efficiency is calculated from the measured EGR temperature, engine coolant temperature (ECT) and from the calculated turbine temperature. Conditions for diagnostic trouble code (DTC):1) Clogged radiator, EGR System Volvo All Engines (2010 Emissions) Fault Code: SPN 4376 FMI 7 PID: PSID 105 Aftertreatment Diesel Exhaust Fluid Pump (DEF) Return Valve Volvo All Engines (2010 Emissions) Fault Code: SPN 4376 FMI 5 PID: PSID 105 Aftertreatment Diesel Exhaust Fluid Pump (DEF) Return Valve Volvo All Engines (2010 Emissions) Fault Code: SPN 4376 FMI 4 PID: PSID...

The Engine Piston Cooling Oil Pressure Sensor is used to detect engine piston lubrication and cooling system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine piston cooling oil pressure causes the sensors diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.The sensor’s signal is monitored by the Engine Control Module (ECM).The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not...