---
title: "P20CD Possible Causes"
slug: p20cd
collection: obd2-codes
code: P20CD
url: https://fixmycar.pk/obd2-code-list/p20cd/
---
1\. Faulty Engine Control Module (ECM)  
2\. Faulty Exhaust Aftertreatment Fuel Injector  
3\. Exhaust Aftertreatment Fuel Injector harness is open or shorted  
4\. Exhaust Aftertreatment Fuel Injector circuit poor electrical connection

![P20CD - Exhaust Aftertreatment Fuel Injector Control Circuit Low Voltage](/uploads/2021/07/2.png)