U017B – BMW DTC

BMW DTC U017B – Lost Communication With ‘Restraints System Sensor L’

DTC U017B meaning on BMW

The DTC U017B code on a BMW indicates a communication error with the ‘Restraints System Sensor L’. This means that the vehicle’s onboard diagnostic system is unable to establish proper communication with the sensor responsible for monitoring the restraint system.

BMW DTC U017B symptoms

Symptoms of the DTC U017B code on a BMW may include:

• Malfunction indicator light (MIL) or airbag warning light illuminated on the dashboard
• Issues with the airbag system
• Loss of communication with the restraint system sensor

BMW DTC U017B causes

Common causes of the DTC U017B code on a BMW include:

• Faulty ‘Restraints System Sensor L’
• Wiring or connection issues between the sensor and the vehicle’s computer
• Corrosion or damage to the sensor or its connectors

BMW DTC U017B seriousness

The DTC U017B code should be taken seriously as it indicates a potential problem with the vehicle’s restraint system. If left unresolved, it could compromise the effectiveness of the airbag system in the event of a collision, putting occupants at risk.

How to diagnose DTC U017B on BMW

To diagnose the DTC U017B code on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s computer
2. Inspect the wiring and connectors associated with the ‘Restraints System Sensor L’ for any visible damage or corrosion
3. Test the sensor itself for proper functionality

How to fix DTC U017B on BMW

To fix the DTC U017B code on a BMW, the following steps may be taken:

1. Replace the faulty ‘Restraints System Sensor L’ if it is determined to be the cause of the communication error
2. Repair or replace any damaged wiring or connectors in the system
3. Clear the fault codes using a diagnostic scanner after the repairs have been completed

How to erase DTC U017B on BMW

To erase the DTC U017B code on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Select the option to clear fault codes from the scanner menu
3. Follow the on-screen prompts to confirm the deletion of the DTC U017B 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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