U0441Invalid Data Received From Emissions Critical Control Information
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- U0441 does not name one controller: the title refers to emissions-critical control information, the data powertrain units exchange for emission-relevant functions. A receiver logs it when such a message arrives but fails plausibility, counter or checksum tests; if the information stops altogether, U0113 applies. Ford's 2014 OBD-II code list marks U0441 for the MIL, whereas U0113 carries no lamp flag there. California's OBD regulation explains the background: data from emission critical powertrain units must be dependable, and a communication fault that keeps a default action from working has to light the MIL. No manufacturer publishes thresholds for U0441. Expect the check engine light, further powertrain codes in the sending unit and a failed emissions inspection until the cause is cleared.
- What you may notice
- Check engine light on
- Additional powertrain or network codes stored
- Emissions inspection not passed while the code is present
- Likely causes
- LikelySoftware of the powertrain unit sending the emission data is outdated or mismatched
- PossibleFault in the powertrain CAN wiring or connectors corrupting messages
- RareLow or unstable supply voltage at the sending or receiving unit
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.