BMW DTC P248E – EGR Cooler Bypass Control Circuit/Open (Bank 2)
DTC P248E meaning on BMW
The DTC P248E error code on a BMW indicates an issue with the EGR (Exhaust Gas Recirculation) Cooler Bypass Control Circuit for Bank 2. This means that there is an open circuit detected in the control system responsible for regulating the EGR cooler bypass function on the second bank of the engine.
BMW DTC P248E symptoms
Some common symptoms associated with the BMW DTC P248E error code may include:
- Check Engine Light (MIL) illuminated on the dashboard
- Reduced engine performance
- Increased fuel consumption
- Engine stalling or rough idling
BMW DTC P248E causes
The potential causes of the DTC P248E error code on a BMW can include:
- Faulty EGR cooler bypass control solenoid
- Open or short circuit in the wiring harness related to the EGR cooler bypass control circuit
- Defective EGR cooler bypass valve
- Issues with the EGR system components
BMW DTC P248E seriousness
Ignoring the DTC P248E error code on a BMW can lead to potential engine performance issues and increased emissions. It is important to address this problem promptly to prevent further damage to the vehicle and ensure optimal engine operation.
How to diagnose DTC P248E on BMW
To diagnose the DTC P248E error code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s ECU
- Inspect the EGR cooler bypass control circuit for any visible damage or loose connections
- Test the EGR cooler bypass control solenoid and valve for proper operation
- Check the wiring harness for continuity and shorts
How to fix DTC P248E on BMW
To fix the DTC P248E error code on a BMW, the following steps may be taken:
- Replace the faulty EGR cooler bypass control solenoid or valve
- Repair any damaged wiring in the EGR cooler bypass control circuit
- Clean or replace the EGR system components if necessary
- Clear the fault codes from the ECU after completing the repairs
How to erase DTC P248E on BMW
To erase the DTC P248E error code on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s ECU. After addressing the underlying issue causing the error code and making the necessary repairs, clearing the fault codes will reset the Check Engine Light and ensure that the issue has been resolved.
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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