U017C – BMW DTC

BMW DTC U017C – Lost Communication With ‘Restraints System Sensor M’

DTC U017C meaning on BMW

The DTC U017C code on a BMW indicates a communication error with the ‘Restraints System Sensor M’. This means that the vehicle’s onboard diagnostic system is unable to establish communication with the sensor responsible for monitoring the restraint system, such as airbags and seatbelt pretensioners.

BMW DTC U017C symptoms

Symptoms of the DTC U017C code on a BMW may include:

• Malfunction indicator light (MIL) or airbag warning light illuminated on the dashboard
• Loss of functionality of the restraint system, such as airbags not deploying in a collision
• Other related diagnostic trouble codes (DTCs) may be present

BMW DTC U017C causes

The common causes of the DTC U017C code on a BMW include:

• Faulty ‘Restraints System Sensor M’
• Wiring or connection issues between the sensor and the vehicle’s electronic control module (ECM)
• ECM software or hardware issues

BMW DTC U017C seriousness

The DTC U017C code should be taken seriously as it indicates a potential problem with the vehicle’s restraint system. If left unresolved, it may compromise the safety features designed to protect occupants in the event of a collision.

How to diagnose DTC U017C on BMW

To diagnose the DTC U017C code on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s ECM
2. Inspect the wiring and connections related to the ‘Restraints System Sensor M’ for any visible damage or corrosion
3. Perform a visual inspection of the sensor itself for any signs of physical damage
4. If necessary, perform a continuity test on the sensor and its wiring to check for proper electrical connections

How to fix DTC U017C on BMW

To fix the DTC U017C code on a BMW, consider the following steps:

1. Replace the faulty ‘Restraints System Sensor M’ if it is determined to be the root cause of the communication error
2. Repair or replace any damaged wiring or connectors associated with the sensor
3. If the issue persists, consult a professional mechanic or dealership for further diagnosis and repair

How to erase DTC U017C on BMW

To erase the DTC U017C code on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault codes stored in the vehicle’s ECM
2. After clearing the code, perform a test drive to ensure the issue has been resolved
3. If the code reappears, further diagnosis may be required to address the underlying problem

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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