Volvo All Engines (2017 Emissions) Fault Code: P203864 PID: ACM Reductant Injection Air Pressure Sensor “A”
Volvo All Engines (2017 Emissions) Fault Code: P203864 PID: ACM Reductant Injection Air Pressure Sensor “A”
Circuit description
This function is used to calculate the EGR Mass Flow. The Engine Control Module (ECM) monitors the EGR differential pressure 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)
Signal Plausibility Failure
Probable cause
1) Air leakage
2) Nozzle
3) Air line
4) Air pressure sensor
5) Wiring harness
6) Air supply
Detailed information
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive
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