Volvo All Engines (2017 Emissions) Fault Code: P040985 PID: EMS EGR Differential Pressure Sensor
Volvo All Engines (2017 Emissions) Fault Code: P040985 PID: EMS EGR Differential Pressure Sensor
Circuit description
This Diagnostic Trouble Code (DTC) monitors and evaluates malfunctions in the (EGR) Exhaust Gas Recirculation Diff Pressure. A faulty (EGR) Exhaust Gas Recirculation differential Pressure can lead to uneven running and response problems.
Conditions for diagnostic trouble code (DTC)
The sensor signal is above normal range
Probable cause
1) B166: EGR Differential Pressure Sensor
2) Wiring harness
Detailed information
Activation
When the diagnostic trouble code (DTC) is active the engine control module (ECM) investigates during an extra driving cycle whether the malfunction indicator lamp (MIL) should be lit. If the DTC is active after the investigation the lamp lights up.
Deactivation
Erase diagnostic trouble code (DTC)
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