B0260Interior Light Circuit
- Generic OBD-II code · Body
- How the car detects it
- No publicly available J2012 list contains B0260 with this meaning, and the same title belongs to B0970. Saab uses the number in the climate control of the 2003 9-3: B0260 06 stands for the left vent door motor circuit open or grounded, B0261 01 for a short to B+. By its title, the code means the courtesy lamp supply. Door ajar switches ground an input when a door opens; in Ford's patent US6133827A a module then lights the dome and footwell lamps, keeps them on for 25 s after the last door shuts and cuts them through a battery saver relay after 40 minutes. Ram's owner's manual describes a 10-minute cut-off for a door left ajar. A circuit fault means lamps that stay dark, never switch off, or drain the battery overnight.
- What you may notice
- Interior lamps do not come on when a door opens
- Interior lamps stay lit or the battery is flat after the car stood overnight
- Likely causes
- LikelyDoor contact switch or lock contact sticking, so the module sees a door open
- PossibleLamp feed shorted in the roof liner or a lamp unit with water damage
- RareBattery saver relay or output stage in the body module faulty
- Repair
- Easy · Often possible to do yourself.Typical cost: €10 – €180
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.