B0503Right Rear Power Window Circuit Malfunction
- Generic OBD-II code · Body
- How the car detects it
- Public J2012 lists do not contain B0503, and no carmaker publishes a description, so the code is unverified. The title names the right rear window circuit. In the 9-3, Saab's right rear door module sets B3205 04 for an open down path and b3992 11 when the glass travels further than expected between its end stops; one-touch up and pinch protection then stop working. GM's 2011 9-4X gives this motor B3220, for example after an internal motor fault. FMVSS 118 lets a window close by itself only if it reverses before 100 N, which a module that has lost track of the glass cannot ensure. International Rectifier's US6906487B2 drives such a motor through an H-bridge with short-circuit and overtemperature cut-off.
- What you may notice
- Right rear window does not open or moves only jerkily
- One-touch closing and pinch protection disabled
- Window stops short of the top seal or runs past it with noise
- Likely causes
- LikelyRegulator cable or guide slipped, glass travel no longer matches
- PossibleRight rear window motor worn or internally faulty
- PossibleMotor or door plug corroded by water in the door
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.