U043CInvalid Data Received From Front Distance Range Sensor - Right
- Generic OBD-II code · Network
- How the car detects it
- U043C is the right-hand counterpart: invalid frames from the right front distance sensor, a corner radar on cars that pair one long-range radar with two short-range units. Finding only U043C points at that sensor, its plug or its mounting area, for example after a light knock on the right bumper corner; U043B and U043C together suggest a shared supply, bus segment or a software issue in the receiver. There is no public manufacturer documentation of U043C and no known threshold. In GM's 2025 EOCM3 tables the right front short-range radar is checked only for message loss, under U023E: more than 0.2 s without frames ends adaptive cruise, special Type C. Functions relying on the right corner view are reduced, others may stay available. U023E is lost contact.
- What you may notice
- Assistance functions using the right front view switched off
- Sensor blocked or check sensor message
- Likely causes
- PossibleRight corner radar knocked out of alignment or damaged
- PossibleShared supply or bus segment fault when both corner codes appear
- RareMoisture or corrosion in the right sensor connector
- 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.