Volvo All Engines (2017 Emissions) Fault Code: P042200 PID: EMS Catalyst System Efficiency Below Threshold (Bank 1)
Volvo All Engines (2017 Emissions) Fault Code: P042200 PID: EMS Catalyst System Efficiency Below Threshold (Bank 1)
This diagnostic function monitors the aftertreatment DPF temperature sensors and DPF soot level during normal operation. Based upon the operating conditions and DPF soot level the ECU decides if the engine should be de-rated in order to protect the DPF system components.
This diagnostic trouble code (DTC) can only occur during normal operating conditions, aftertreatment diesel particulate filter (DPF) regeneration process not active. In some cases extreme driving conditions can cause soot in the DPF to oxidize at an unacceptable rate and cause DPF damage.
Conditions for diagnostic trouble code (DTC):
1) SCR conversion efficiency below threshold
Probable cause
1) Filter outlet has plugs missing/cracked and soot on the filter outlet
2) Overheated DPF
3) Exhaust leakage
4) Exhaust Gas Temperature (EGT) Sensor
5) Diesel particulate filter (DPF)
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