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AutoCodes - Generic - P20CD

P20CD Code - Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage

- Code Popularity: 18,651 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P20CD?

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 Injector
  • Exhaust Aftertreatment Fuel Injector harness is open or shorted
  • Exhaust Aftertreatment Fuel Injector circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P20CD?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P20CD code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P20CD 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. The ECM supplies power and ground to the high and low control circuits of the exhaust aftertreatment fuel injector. When the ECM detects a fault on either of the exhaust aftertreatment fuel injector circuits it sets a Diagnostic Trouble Code (DTC).

OBDII Code P20CD - Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage - AutoCodes.com
P20CD Code - Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage

Need More Information on the Code?

Need more information on how to fix the P20CD code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P20CD Buick Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage
  • P20CD Cadillac Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage
  • P20CD Chevrolet Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage
  • P20CD GMC Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage

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Code P20CD comments

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