U045FInvalid Data Received From Automated Driving System Interface Module A
- Generic OBD-II code · Network
- Can trigger limp mode
- How the car detects it
- Interface module A sits between an automated driving computer and the base vehicle: it turns the computer's steering, braking and propulsion requests into commands the vehicle's own controllers accept and reports their state back. Bosch places this act layer at the end of its sense-think-act chain. U045F is set when the automation computer or an actuator controller receives frames from interface A that fail checks such as alive counter, CRC or timing, the mechanisms AUTOSAR standardises for end-to-end protection; U015E means interface A is no longer heard. No manufacturer documents U045F publicly. Since the computer can no longer trust what reaches the actuators, it must disengage or, at higher SAE J3016 levels, bring the car to a minimal-risk stop and hand back to the driver. Manual driving remains possible.
- What you may notice
- Automated driving or advanced assistance refuses to engage
- Takeover request or warning to the driver
- Likely causes
- LikelySoftware of interface module A not matching the automation computer or actuator controllers
- PossibleConnector, bus wiring or supply fault at interface A
- RareInternal fault of interface module A
- 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.