BMW DTC P01E4 – Engine Coolant Temperature Sensor 3 Circuit Range/Performance
DTC P01E4 meaning on BMW
The DTC P01E4 fault code on a BMW indicates an issue with the Engine Coolant Temperature Sensor 3 Circuit Range/Performance. This means that the signal from the coolant temperature sensor 3 is outside the expected range or is not performing as it should.
BMW DTC P01E4 symptoms
Symptoms of the DTC P01E4 on a BMW may include inaccurate temperature readings on the dashboard, engine overheating, poor fuel economy, rough idling, and potential stalling or starting issues.
BMW DTC P01E4 causes
The common causes of the DTC P01E4 on a BMW include a faulty Engine Coolant Temperature Sensor 3, wiring issues in the sensor circuit, a corroded connector, or a problem with the Engine Control Module (ECM).
BMW DTC P01E4 seriousness
While the DTC P01E4 may not cause immediate harm to the vehicle, it can lead to engine performance issues and potential overheating problems if left unresolved. It is recommended to address this fault code promptly.
How to diagnose DTC P01E4 on BMW
To diagnose the DTC P01E4 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the Engine Coolant Temperature Sensor 3 and its wiring. Testing the sensor’s resistance and checking for any voltage irregularities can help pinpoint the issue.
How to fix DTC P01E4 on BMW
Fixing the DTC P01E4 on a BMW usually involves replacing the faulty Engine Coolant Temperature Sensor 3. Additionally, checking and repairing any damaged wiring or connectors in the sensor circuit can help resolve the issue. After the repairs are made, clearing the fault code and performing a test drive to ensure the problem is resolved is recommended.
How to erase DTC P01E4 on BMW
To erase the DTC P01E4 on a BMW, a diagnostic scanner can be used to clear the fault code from the Engine Control Module (ECM). Once the repair has been completed and the issue resolved, clearing the fault code will reset the system and turn off the check engine light.
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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