Make: Volvo
Engine: All Engines (2017 Emissions)
Fauld Code: P048900
PID: EMS
SPN: N/A
FMI: N/A
Description: EGR “A” Control Circuit Low
Troubleshooting:
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) Supply voltage greater than 35V volts for more than 5 seconds
Observable symptoms
1) Loss of power
Probable cause
1) Connector
2) Wires between EGR Valve and Engine Control Module (ECM)
3) EGR Valve
Make: Volvo
Engine: All Engines (2017 Emissions)
Fauld Code: P04DD00
PID: EMS
SPN: N/A
FMI: N/A
Description: Cold Start EGR “A” Flow Insufficient Detected
Troubleshooting:
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 value
2) The EGR mass flow is an calculated value based on a number of sensor signals and
software calculations
Probable cause
1) EGR System
2) Connector
3) Wiring harness
4) EGR differential pressure sensor
5) EGR Valve
Make: Volvo
Engine: All Engines (2017 Emissions)
Fauld Code: P050E00
PID: EMS
SPN: N/A
FMI: N/A
Description: Cold Start Engine Exhaust Temperature Too Low
Troubleshooting:
This diagnostic function indicates malfunction at the exhaust gas temperature (EGT) sensor.
The purpose of the exhaust gas sensor is to contribute the relevant temperatures required for
the temperature regulated aftertreatment diesel particulate filter regeneration control. A faulty
EGT sensor can result with a failed aftertreatment (DPF) regeneration.
Conditions for diagnostic trouble code (DTC):
1) Exhaust temperature, Lower than expected
Observable symptoms
1) This function indicates that the NOx conversion efficiency is not correct
Probable cause
1) Aftertreatment exhaust gas temperature (EGT) sensors installed in the incorrect location on
the aftertreatment diesel particulate filter (DPF)
2) Pre-catalyst, Exhaust Gas Temperature (EGT) Sensor
3) Exhaust system
4) Aftertreatment Hydrocarbon Doser
5) Low compression
Make: Volvo
Engine: All Engines (2017 Emissions)
Fauld Code: P052001
PID: EMS
SPN: N/A
FMI: N/A
Description: Engine Oil Pressure Sensor/Switch “A”
Troubleshooting:
Conditions for diagnostic trouble code (DTC):
1) General Electrical Failure
Observable symptoms
1) The engine oil pressure (EOP) gauge shows 0 when the engine is running
Probable cause
1) Engine wiring harness
2) Engine oil pressure (EOP) sensor
3) Engine Control Module