Network
generic / SAE
U0452
Invalid Data Received From Restraints Control Module
A receiving module detected implausible data from the restraints control module (airbag/SRS). Crash sensor or seat-belt status data fails plausibility checks and is rejected; airbag deployment thresholds may revert to a default map.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number4 / 52
Possible causes
- Module internal fault or sensor input drift high
- Software version mismatch after replacement medium
- Gateway module routing CAN messages incorrectly low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2000 €
- Estimated time: 1–4 h
- Component: restraints control module
- MIL / check engine light
- drive cycle required
Sources
References
sae:J2012