P20CE

DTC P20CE, sometimes indicated as P20CE00 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing exhaust aftertreatment fuel injector "a" control circuit high.

This code is set when the PCM detects a high voltage or short circuit condition in the exhaust aftertreatment fuel injector "A" control circuit.
There are a few things that could cause this code:
-A faulty exhaust aftertreatment fuel injector
-A wiring problem in the exhaust aftertreatment fuel injector circuit
-A problem with the PCM
If you have this code, I would start by checking the wiring and connectors in the exhaust aftertreatment fuel injector circuit. If everything looks okay, I would then test the exhaust aftertreatment fuel injector for continuity and resistance. If the injector is okay, I would then check the PCM for faults.

• P20CE: Aftertreatment Fuel Injector A Control Circuit High
• P20CE: Exhaust Aftertreatment Fuel Injector "A" Control Circuit High
• P20CE: Exhaust after treatment fuel injector A – control circuit high
• P20CE 00: Exhaust after treatment fuel injector A - control circuit high