BMW DTC P20CE – Exhaust Aftertreatment Fuel Injector ‘A’ Control Circuit High
DTC P20CE meaning on BMW
DTC P20CE on a BMW indicates a fault with the Exhaust Aftertreatment Fuel Injector ‘A’ Control Circuit. This means that the control module has detected a high voltage condition in the circuit that controls the fuel injector for the exhaust aftertreatment system.
BMW DTC P20CE symptoms
Symptoms of DTC P20CE on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased fuel consumption
- Smoke or unusual exhaust emissions
BMW DTC P20CE causes
Common causes of DTC P20CE on a BMW include:
- Faulty Exhaust Aftertreatment Fuel Injector ‘A’
- Wiring or connector issues in the control circuit
- Defective control module
- Software issues
BMW DTC P20CE seriousness
DTC P20CE should be addressed promptly as it can lead to poor engine performance and increased emissions. Ignoring this fault may result in further damage to the exhaust aftertreatment system and potentially affect the vehicle’s compliance with emissions regulations.
How to diagnose DTC P20CE on BMW
To diagnose DTC P20CE on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors related to the Exhaust Aftertreatment Fuel Injector ‘A’
- Test the fuel injector and control circuit for proper operation
- Check for any software updates or recalibrations available for the control module
How to fix DTC P20CE on BMW
To fix DTC P20CE on a BMW, the following steps may be taken:
- Replace the faulty Exhaust Aftertreatment Fuel Injector ‘A’
- Repair any damaged wiring or connectors in the control circuit
- If necessary, replace the control module
- Perform any software updates or recalibrations recommended by the manufacturer
How to erase DTC P20CE on BMW
After the issue causing DTC P20CE on a BMW has been resolved, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s memory and turn off the Check Engine Light. It is important to ensure that the underlying problem has been fixed before clearing the code.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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