U0505Invalid Data Received From Door Control Module F
- Generic OBD-II code · Network
- How the car detects it
- At Ford, F is the second of the electronic latch modules (DCMF). Its typical troubles are documented, though not with U0505 itself: 2020–2023 Aviators logged latch circuit codes in DCME–DCMH when low battery voltage met fault thresholds set too low (SSM 50556), and Mach-E cars raised false alarms through latch module software (SSM 51292). Both show that supply voltage and software are where such modules fail. U0505 is set when a listener receives DCMF's frames but discards them as implausible. GM's Saab 9-5 list maps the partner slot U0204 to the right rear door switch panel. Losing the frames completely gives U0204. Symptoms are door ajar warnings, an alarm going off or a door that will not open electrically.
- What you may notice
- Door ajar or door fault warning
- False alarm after locking
- Likely causes
- LikelyLow 12 V battery voltage disturbing the latch module (Ford/Lincoln)
- PossibleOutdated latch module software
- RareDoor control module F internally faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.