BMW DTC P14B5 – Exhaust Gas Temperature Sensor Circuit High (Bank 2, front of Diesel Particulate Filter)
DTC P14B5 meaning on BMW
The DTC P14B5 code on a BMW indicates a fault in the Exhaust Gas Temperature (EGT) sensor circuit located in front of the Diesel Particulate Filter (DPF) on Bank 2. This fault specifically points to a high voltage condition in the sensor circuit.
BMW DTC P14B5 symptoms
Symptoms of a DTC P14B5 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Reduced engine performance
- Increased fuel consumption
- Possible regeneration issues with the DPF
BMW DTC P14B5 causes
Common causes of a DTC P14B5 on a BMW include:
- Defective Exhaust Gas Temperature (EGT) sensor
- Wiring or connector issues in the sensor circuit
- Faulty Engine Control Module (ECM)
BMW DTC P14B5 seriousness
The seriousness of a DTC P14B5 on a BMW should not be ignored, as it can lead to potential engine performance issues and affect the proper functioning of the Diesel Particulate Filter (DPF). It is recommended to address this fault promptly to prevent further damage to the vehicle.
How to diagnose DTC P14B5 on BMW
To diagnose a DTC P14B5 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the wiring and connectors in the EGT sensor circuit for any damage or corrosion
- Test the EGT sensor for proper resistance and voltage readings
- Check the ECM for any stored codes or malfunctions
How to fix DTC P14B5 on BMW
To fix a DTC P14B5 on a BMW, you can try the following:
- Replace the faulty Exhaust Gas Temperature (EGT) sensor
- Repair or replace any damaged wiring or connectors in the sensor circuit
- If necessary, reprogram or replace the Engine Control Module (ECM)
How to erase DTC P14B5 on BMW
To erase a DTC P14B5 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue and making the necessary repairs, you can then reset the Check Engine Light and erase the DTC P14B5 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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