B3806
High Beam and Headlamp Flash Select Circuit Malfunction
Severity
⚠️ MediumCan you drive?
Do not drive — repair immediately
Approx. repair cost
$6–56 (est.)
Symptoms
- High beam headlights do not work
- The headlight flashing function does not work
- Flashing or flickering high beams
- Dashboard warning
Causes
- Broken or damaged wiring harness
- Blown fuse
- Faulty relay
- Problems with the lighting control module
- Faulty headlights
How to Fix
- Check and replace the fuse if necessary
- Check high beam control relay
- Inspect the wiring harness for damage
- Check contacts and connectors
- Diagnose the lighting control module
- Check that the headlights are working properly
Related codes
Error B3806 by Vehicle Brand
AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye