B0811Right Headlamp Low Beam Circuit
- Generic OBD-II code · Body
- How the car detects it
- No J2012 excerpt or published service text uses B0811, which leaves the code undocumented. The title names the right dipped-beam circuit. In GM's 2011 Saab 9-5 the body control module powers low beam or daytime running lamps, while a separate headlamp control module stores B2699 (02 grounded, 04 open, 00 malfunction) when it sees a commanded lamp stay dark. The older 9-3 uses the same number B2699 for its right dipped beam and sets 04 below 0.8 A or 0B at 7.9–30 A, for instance after a bulb of the wrong rating has been fitted. FMVSS 108 sets the lower-beam requirements every car has to meet. A failed right dipped beam leaves the kerb side poorly lit at night and should be fixed quickly. Left side: B0810.
- What you may notice
- Right dipped beam or daytime running lamp stays dark
- Lamp warning shown in the instrument cluster
- Kerb side poorly lit at night; have it repaired promptly
- Likely causes
- LikelyRight low-beam bulb or LED unit failed
- PossibleIncorrect bulb rating after a replacement
- PossibleOpen or grounded supply wire to the headlamp
- RareHeadlamp or body control module output faulty
- Repair
- Easy · Often possible to do yourself.Typical cost: €10 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.