P1609 Diagnostic Trouble Code (7 interpretations)

The control module detected a fault associated with the Serial Communicating Link EML circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by BMW.

The control module detected a fault associated with the Loss Of TCS Serial Data 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 improper operation of the Internal Control Module CPU To CPU Communication circuit. This is the manufacturer-specific definition used by Jaguar.

The control module detected improper operation of the Immobilizer. This is the manufacturer-specific definition used by Kia.

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

The control module detected a fault associated with the Crash Shut - Down Activated 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 18017. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

The control module detected a fault associated with the Electronic throttle system (ETS) - throttle valve command/actual throttle valve position, correlation circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volvo.