U0433Invalid Data Received From Front Distance Range Sensor - Single Sensor or Center
- Generic OBD-II code · Network
- How the car detects it
- U0433 concerns the forward distance sensor of adaptive cruise control when there is only one or when it sits in the middle, usually a long-range radar behind the grille. A receiver stores it when the radar's object frames fail their protection checks or carry implausible values. GM's 2025 tables describe the EOCM3 assistance controller testing six protected radar burst messages for wrong counter, checksum or authentication code; it reacts after errors in 3 of 4 messages, judged over about 0.03 s of a 0.04 s window and only at 9 to 16 V, and then switches adaptive cruise off as a special Type C fault without MIL. Ford's 2014 code list carries U0433 without lamp marking. For the driver, cruise and collision warning become unavailable. U0235 is lost contact; left and right sensors use U043B and U043C.
- What you may notice
- Adaptive cruise control switched off
- Forward collision warning or emergency braking unavailable
- Likely causes
- PossibleRadar misaligned after front-end work or impact, sending implausible objects
- PossibleRadar or assistance controller software out of step
- RareLow supply voltage or poor connector at the radar
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.