Engine-Codes - Generic - P20DC

P20DC Code - Exhaust Aftertreatment Fuel Supply Control Stuck Closed

- Code Popularity: 10,116 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P20DC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Exhaust Aftertreatment Fuel Supply Control
  • Exhaust Aftertreatment Fuel Supply Control harness is open or shorted
  • Exhaust Aftertreatment Fuel Supply Control circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P20DC?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P20DC Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P20DC code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P20DC Code Mean?

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.

P20DC Code - Exhaust Aftertreatment Fuel Supply Control Stuck Closed

Need more Information on the Code?

Need more information on how to fix the P20DC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P20DC code diagnosed by a professional: Find a repair shop in your area