Network, generic

U0573 Invalid Data Received From Vehicle Motion Control Module B

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Lost time synchronisation between module B and the actuator controllers
Modules A and B on different software levels
Motion control module B internally faulty

Symptoms

  • Warning about reduced chassis or assistance functions
  • Automated or semi-automated driving functions unavailable

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–1,500
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

vehicle motion control module b

Related codes

U0572U0416U0420

References: data.epo.org, zf.com.