P1666 Code défaut de diagnostic (6 interprétations)

The control module detected a fault associated with the Driver 3 Line 6 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chevrolet.

The control module detected a fault associated with the Engine control module (ECM) - engine shut - off control circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Dodge.

The control module detected a fault associated with the Immobilizer signal - CAN data bus circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Land Rover.

The control module detected a fault associated with the Cylinder cut - out solenoid, bank 1 or 2 - does not open circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mercedes-Benz.

The control module detected improper operation of the Injector 1 - current circuit. This is the manufacturer-specific definition used by Audi.

The control module detected an electrical fault in the Valve for Pump - Jet: Cylinder 1 (N240) circuit. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 18074. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).