BMW DTC U1402 – Invalid Data Received From Wheel Speed Sensor Rear Right
DTC U1402 meaning on BMW
The DTC U1402 code on a BMW indicates that the Engine Control Module (ECM) has detected invalid data being received from the Wheel Speed Sensor located on the rear right wheel of the vehicle. This sensor is responsible for monitoring the speed of the rear right wheel and providing crucial data for the vehicle’s stability control system.
BMW DTC U1402 symptoms
Symptoms of the DTC U1402 code on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Stability control system not functioning properly
- Decreased handling and stability while driving
BMW DTC U1402 causes
The DTC U1402 code on a BMW can be caused by various factors, including:
- Faulty Wheel Speed Sensor on the rear right wheel
- Damaged wiring or connectors leading to the sensor
- Corrosion or debris affecting the sensor’s performance
- ECM software issues
BMW DTC U1402 seriousness
The DTC U1402 code should not be ignored as it can lead to compromised safety and stability while driving. It is important to address this issue promptly to ensure the proper functioning of the vehicle’s stability control systems.
How to diagnose DTC U1402 on BMW
To diagnose the DTC U1402 code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the ECM
- Inspect the rear right wheel speed sensor for any visible damage or contamination
- Check the wiring and connectors leading to the sensor for any signs of wear or corrosion
- Perform a road test to verify the symptoms associated with the code
How to fix DTC U1402 on BMW
To fix the DTC U1402 code on a BMW, the following steps may be taken:
- Replace the rear right wheel speed sensor if it is found to be faulty
- Repair or replace any damaged wiring or connectors leading to the sensor
- Clean the sensor and its mounting area to ensure proper operation
- Clear the fault codes from the ECM memory
How to erase DTC U1402 on BMW
To erase the DTC U1402 code on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the ECM memory. Once the underlying issue has been addressed and fixed, the code can be erased to reset the system and ensure that the warning lights are no longer illuminated on the dashboard.
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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