U0573Invalid Data Received From Vehicle Motion Control Module B
- Generic OBD-II code · Network
- Can trigger limp mode
- How the car detects it
- U0573 is the B variant: invalid data from a second vehicle motion control module. A second unit makes sense where coordination tasks are split, for example lateral and longitudinal motion, or where a backup must take over for automated driving. Hitachi Astemo's patent explains why timing matters in such systems: actuator modules receive their instructions over a shared network that also carries other traffic, so each instruction refers to a common time frame. Data from B that arrive outside that frame, with stale counters or with values contradicting module A are rejected and stored as U0573. No manufacturer documents the code publicly, and no lost-communication code exists for this module. Coordinated functions are then reduced.
- What you may notice
- Warning about reduced chassis or assistance functions
- Automated or semi-automated driving functions unavailable
- Likely causes
- LikelyLost time synchronisation between module B and the actuator controllers
- PossibleModules A and B on different software levels
- RareMotion control module B internally faulty
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.