For Shop Owners

P20CF - Exhaust Aftertreatment Fuel Injector 'A' Stuck Open

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Faulty Exhaust Aftertreatment Fuel Injector
  • Exhaust Aftertreatment Fuel Injector harness is open or shorted
  • Exhaust Aftertreatment Fuel Injector circuit poor electrical connection
What does this mean?

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

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.
OBDII Code P20cf - Exhaust Aftertreatment Fuel Injector 'A' Stuck Open -

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P20CF Comments

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Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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Posted and Edit by 12-18-2016

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