P1841 Code défaut de diagnostic (3 interprétations)

The control module detected that the signal in the Internal Mode Switch 'S' circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Chevrolet.

The control module detected a fault associated with the Automatic Transmission Fluid Pressure Switch 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Nissan.

The control module detected a fault associated with the Engine Control Module / Transmission Control Module Incompatible circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 18249. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).