Nous utilisons des cookies pour des statistiques de base — rien n'est chargé tant que vous n'acceptez pas. Vous pouvez refuser et continuer à naviguer normalement. Politique de Confidentialité
Diagnostic trouble code B1209 indicates: EIC Switch-2 Assembly Circuit Failure. It was set by your vehicle's onboard diagnostics system and will typically keep the check engine light on until it's addressed.
Upload your ECU file and DTC Doctor will detect this code (and any others) automatically, then remove it for good — no dealer visit, no guesswork.
Analyze My File Free →