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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)

Volvo All Engines (2017 Emissions) Fault Code: P040399 PID: EMS EGR “A” Control
Volvo All Engines (2017 Emissions) Fault Code: P040398 PID: EMS EGR “A” Control
Volvo All Engines (2017 Emissions) Fault Code: P040397 PID: EMS EGR “A” Control
Volvo All Engines (2017 Emissions) Fault Code: P040311 PID: EMS EGR “A” Control
Volvo All Engines (2017 Emissions) Fault Code: P04009C PID: EMS Exhaust Gas Recirculation “A” Flow
Volvo All Engines (2017 Emissions) Fault Code: P04009B PID: EMS Exhuast Gas Recirculation “A” Flow
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