Lost Communication With Restraints System Sensor F
What it means
U0175 means the restraints control module has lost communication with crash sensor "F" — one of the impact/satellite sensors that tell the airbag system when and how to deploy. The car still drives, but with a sensor offline the airbags or seatbelt pretensioners may not deploy correctly, so the SRS light comes on and it should be treated as a safety fault. Common causes are damaged or unseated wiring and connectors (often after collision repair), a power/ground fault, or a failed sensor.
Can I keep driving? Drivable, but a safety concern — a crash sensor has dropped off the restraints network, so airbags or pretensioners may not deploy correctly. The airbag light will be on.
Common symptoms
What you'll notice
- Airbag/SRS warning light on
- Restraints control module reports a missing crash sensor
- Airbag system flagged as faulty on the scan tool
- Fault often appears after front-end/collision repair or wiring work
Common causes
Most likely first
- Damaged or corroded connector/wiring at the restraint sensorLikely
- Sensor disturbed or not reconnected after collision or body repairCommon
- No power or ground to the sensorCommon
- Internally failed restraints system sensorLess often
How to diagnose & fix
Work through it in order
- Scan the restraints system and confirm which sensor is not communicating.
- Locate sensor 'F' in the service data and inspect its connector and wiring for damage and corrosion.
- Verify the sensor is fully seated and its power/ground are present.
- Repair the wiring or reseat the connector; follow the SRS service procedure and precautions.
- If it still won't communicate, replace the sensor per the procedure, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0175?+
Can I just clear U0175?+
Related codes
Often seen with U0175
Read & clear U0175 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.