BMW DTC U0473 – Invalid Data Received From Restraints System Sensor ‘C’
DTC U0473 meaning on BMW
DTC U0473 on a BMW indicates that the Engine Control Module (ECM) has detected invalid data from the Restraints System Sensor ‘C’. This fault code is specific to the restraint system sensor ‘C’, which is responsible for monitoring certain safety aspects related to the vehicle’s restraint system.
BMW DTC U0473 symptoms
Symptoms of DTC U0473 on a BMW may include:
- Malfunction indicator lamp (MIL) or airbag warning light illuminated on the dashboard
- Issues with the vehicle’s airbag system
- Loss of communication with the restraint system sensor ‘C’
BMW DTC U0473 causes
Possible causes of DTC U0473 on a BMW include:
- Faulty or damaged Restraints System Sensor ‘C’
- Wiring or connection issues in the restraint system circuit
- Interference from other electronic components
BMW DTC U0473 seriousness
DTC U0473 should be taken seriously as it relates to the vehicle’s restraint system, which is crucial for occupant safety in the event of a collision. Driving with a fault in the restraint system sensor ‘C’ may compromise the effectiveness of the airbag system and other safety features.
How to diagnose DTC U0473 on BMW
To diagnose DTC U0473 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the wiring and connections related to the Restraints System Sensor ‘C’
- Perform a visual inspection of the sensor and surrounding components
- Conduct further testing as needed to pinpoint the exact cause of the issue
How to fix DTC U0473 on BMW
To fix DTC U0473 on a BMW, the following steps may be taken:
- Replace the faulty Restraints System Sensor ‘C’ if necessary
- Repair any damaged wiring or connections in the restraint system circuit
- Clear the fault code from the ECM memory after the repair is completed
- Perform a test drive to ensure the issue has been resolved
How to erase DTC U0473 on BMW
To erase DTC U0473 on a BMW, the fault code can be cleared using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. However, it is important to address the underlying cause of the fault code before clearing it to prevent it from reoccurring.
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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