Volvo

Volvo All Engines (2017 Emissions) Fault Code: P04DA00 PID: EMS Closed Loop EGR Control At Limit – Flow Too High This function is used to calculate the EGR Mass Flow. The Engine Control Module (ECM) monitors the EGR diffpressure sensor and the EGR temperature sensor after cooler and uses these signals to calculate the EGR Mass Flow data. Conditions for diagnostic trouble code (DTC):1) EGR mass flow above calculated value2) The EGR mass flow is an calculated value based on a number of sensor signals and software calculations Probable cause1) Connector2) Wiring harness3) EGR Valve4) EGR differential pressure sensor Detailed...

Volvo All Engines (2017 Emissions) Fault Code: P04DB00 PID: EMS Crankcase Ventilation System Disconnected The Crankcase Pressure Sensor is used to detect crankcase pressure system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Crankcase pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.The engine control module (ECM) will set a diagnostic trouble code (DTC) if the sensor signal is not within predetermined limits. The ECM can also disable the engine brake, derate or shut down the engine to avoid engine damage.The...

Volvo All Engines (2017 Emissions) Fault Code: P04DD00 PID: EMS Cold Start EGR “A” Flow Insufficient Detected The EGR Valve operation is controlled by the Engine Control Module (ECM) using a pulse width modulated signal.  The ECU provides both the power and ground circuits. The EGR Valve assembly consists of a solenoid, operating a valve by hydraulic pressure provided by the engine’s oiling system. Conditions for diagnostic trouble code (DTC):1) EGR mass flow is below calculated value2) The EGR mass flow is an calculated value based on a number of sensor signals and software calculations Probable cause1) EGR System2) Connector3)...

Volvo All Engines (2017 Emissions) Fault Code: P050011 PID: EMS Wheel-Based Vehicle Speed Circuit descriptionThis signal is sent from the (VECU) Vehicle Electronic Control Unit to the Cluster to present the actual vehicle speed. It is also used by the maximum speed limitation. The maximum speed limit can vary depending on customer option. Observable symptomsSpeedometer shows no vehicle speedCruise control does not function Probable cause1) Damaged connector2) Damaged wires3) Sensor Volvo All Engines (2017 Emissions) Fault Code: P049D99 PID: EMS EGR “A” Control Position Exceeded Learning Limit Volvo All Engines (2017 Emissions) Fault Code: P048012 PID: EMS Fan 1 Control...

Volvo All Engines (2017 Emissions) Fault Code: P050013 PID: EMS Wheel-Based Vehicle Speed This signal is sent from the (VECU) Vehicle Electronic Control Unit to the Cluster to present the actual vehicle speed. It is also used by the maximum speed limitation. The maximum speed limit can vary depending on customer option. Observable symptoms1) Speedometer shows no vehicle speed2) Cruise control does not function3) No retarder function Probable cause1) Damaged connector2) Damaged wires3) Open circuit, Signal wire4) Speed sensor Volvo All Engines (2017 Emissions) Fault Code: P04DD00 PID: EMS Cold Start EGR “A” Flow Insufficient Detected Volvo All Engines (2017...