Volvo All Engines (2017 Emissions) Fault Code: P20E797 PID: ACM Reductant Injection Air Pressure Too High
Volvo All Engines (2017 Emissions) Fault Code: P20E797 PID: ACM Reductant Injection Air Pressure Too High
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)
The air valve duty cycle is lower than expected
The air pressure decreases slower than expected when the air valve has been closed
Observable symptoms
Possible engine de-rate
Probable cause
1) Nozzle (Air circuit)
2) Air line
3) Crystals in the Aftertreatment Diesel Exhaust Fluid (DEF) mixing tube
4) Aftertreatment diesel exhaust fluid (DEF) pump
Detailed information
Crystallized Aftertreatment Diesel Exhaust Fluid (DEF) indicates that the overflow valve is leaking DEF solution backwards
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive
-
-
-
-
Volvo Premium Tech Tool PTT 2.8.130 Diagnostic Software 04.2022 ACPI ( 1 PC )
Trucks software $143.00 -
Related products
-
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 3 EGR Temperature After Cooler
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: SID 146 FMI 5 EGR Control Valve
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 158 FMI 4 Battery Voltage
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 105 FMI 5 Boost Air Pressure / Temperature Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 108 FMI 2 Ambient Pressure Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 0 EGR Temperature After Cooler
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 102 FMI 5 Boost Air Pressure / Temperature Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 26 FMI 3 Fan Speed
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: SID 146 FMI 7 EGR Control Valve
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 49 FMI 9 ABS Status
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PPID 55 FMI 4 ECU Temperature
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PPID 35 FMI 5 EGR Mass Flow Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 108 FMI 4 Ambient Pressure Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 26 FMI 8 Fan Speed
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 5 EGR Temperature After Cooler
All Engines (2004 Emissions)
