Volvo All Engines (2017 Emissions) Fault Code: P040912 PID: EMS EGR Differential Pressure Sensor
Volvo All Engines (2017 Emissions) Fault Code: P040912 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 voltage at pin A14.EA:21 is above normal value
Diagnostic operating conditions
Ignition key in ON position
Observable symptoms
Poor accelerator pedal (AP) response
Regeneration not possible
Probable cause
1) Connector
2) Wiring harness
3) EGR differential pressure sensor
4) Engine control module (ECM)
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