Network
generic / SAE
U0441
Invalid Data Received From Emissions Critical Control Information
A receiving module detected implausible data tagged as emissions-critical (CARB OBD requirement). The receiver discards the message and may set the MIL because emissions monitors cannot run.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number4 / 41
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: medium
- DIY: shop recommended
- Estimated cost: 120–1500 €
- Estimated time: 0.5–3 h
- Component: vehicle bus wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012