B0700Sunroof Open/Close Circuit
- Generic OBD-II code · Body
- How the car detects it
- No accessible J2012 list, public manufacturer manual or NHTSA bulletin contains B0700, so the code cannot be verified. Its title points to the circuit that drives a power sunroof open and shut. GM-era Saab cars report such faults under their own numbers: the 9-3 sunroof module stores B3661 0E when motor current is too high and B3664 04 for an open switch line, after which button presses are ignored; B3664 0A follows if the same switch position is seen for over 30 s. In the 2011 Saab 9-5 the module reads the switch as a resistor ladder and reports B3664 to the BCM via LIN. FMVSS 118 demands that a closing roof panel reverses before it squeezes with 100 N, which is why motor current is supervised at all. Position feedback: B0710.
- What you may notice
- Sunroof does not move when the button is pressed
- Roof stops or reverses on its own while closing
- Motor hums without the panel moving
- Likely causes
- LikelyDirty or dry guide rails raising motor current
- PossibleSunroof switch or its wiring faulty
- PossibleSunroof motor or gearbox worn
- RareSunroof control electronics faulty
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.