U0545Invalid Data Received From Running Board Control Module A
- Generic OBD-II code · Network
- How the car detects it
- Power running boards deploy when a door opens and retract when it closes or the vehicle moves; a running board control module (Ford: RBM) drives the motors and reports position and faults. U0545 means its data reach other modules but are rejected. Ford shows how closely the function is tied to other electronics: on the 2027 Expedition and Navigator the boards stopped and the cluster warned of a running board fault while the driver seat module held C1008:15/C1009:15 and other modules stored U0208 and U0244, traced to DSM software (SSM 55168). Earlier F-150, Super Duty and Expedition RBMs switched from Auto to Off after low battery voltage with U3003:16 (SSM 50154) or due to software (SSM 52411). No bulletin names U0545. Boards may stay extended or retracted.
- What you may notice
- Running boards do not deploy or retract, fault message in the cluster
- Running board setting changes from Auto to Off by itself
- Likely causes
- PossibleSoftware fault in the running board or hosting seat module
- PossibleLow battery voltage event corrupting module data
- PossibleImplausible motor position feedback from dirt, ice or corrosion at the board
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.