P20CF Code: Meaning, Causes, and Symptoms | OBD2 Codes

P20CF – Exhaust Aftertreatment Fuel Injector ‘A’ Stuck Open

 

P20CF Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P20CF Possible Causes

 

Faulty Exhaust Aftertreatment Fuel Injector,Exhaust Aftertreatment Fuel Injector harness is open or shorted,Exhaust Aftertreatment Fuel Injector circuit poor electrical connection

 

P20CF Description

 

The exhaust fuel addition injector assembly is mounted on the outlet of the turbocharger sub-assembly, and low-pressure fuel is supplied to the exhaust fuel addition injector assembly by the feed pump in the supply pump assembly. The exhaust fuel addition injector assembly adds fuel by a control signal from the Engine Control Module (ECM). This injector is used for two different controls: Particulate Matter (PM) forced regeneration and PM reduction.