Volvo All Engines (2013 Emissions) Fault Code: P20CA00 PID: ACM Reductant Injection Air Pressure Leakage

Volvo All Engines (2013 Emissions) Fault Code: P20CA00 PID: ACM Reductant Injection Air Pressure Leakage

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 higher than expected

Probable cause
1) Leakage from air lines
2) Overflow valve
3) Air Valve
4) Nozzle
5) Air Cleaner (ACL)

Detailed information
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive

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