U0452Invalid Data Received From Restraints Control Module
- Generic OBD-II code · Network
- How the car detects it
- The restraints control module decides on airbag and belt tensioner deployment; in many GM vehicles it also sends yaw rate, lateral and longitudinal acceleration and post-crash data to other units. U0452 means a receiver rejects these frames; U0151 is lost contact. GM's 2025 tables show the checks: the ECM tests the alive counter and protection field, 8 failures in 18 samples or 4 in 10 set a Type C code without MIL; the EOCM3 needs 6 bad messages in 10 and turns off adaptive cruise. GM bulletin 23-NA-206 names U0452 in the brake module among history codes to ignore. Ford's SSM 46901 covers 2017-18 Fusion and MKZ with an airbag lamp or SYNC 911 Assist message and U0452 in the APIM; the RCM gets new software. SSM 46902 blames CAN overload in the F-150 FCIM.
- What you may notice
- Airbag warning lamp on
- Emergency call or crash notification message
- Adaptive cruise or stability functions unavailable
- Likely causes
- LikelyRestraints control module software needs reprogramming
- PossibleReceiver stores the code as history after start-up or network wake-up without a real fault
- PossibleHigh CAN bus load, poor ground or connector fault on the restraints network branch
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.