[amidgeha]

Exhaust Aftertreatment Fuel Injector (A) Circuit/Open

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.

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

Symptoms:
Check engine light