P1177 Diagnostic Trouble Code (9 interpretations)

The control module registered the fault condition described as "Synchronization Fault". This is the manufacturer-specific definition used by Ford.

The control module detected a fault associated with the Rich mixture - long term fuel trim circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Jaguar.

The control module detected improper operation of the Electronic throttle system (ETS), throttle motor - circuit 2. This is the manufacturer-specific definition used by Kia.

The control module detected a fault associated with the Fuel trim (FT) rich mixture 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 improper operation of the Engine oil sensor, quality/level/temperature. This is the manufacturer-specific definition used by Mercedes-Benz.

The control module detected that the O2 Sensor Slow Response Bank 2 responded more slowly than expected. This is the manufacturer-specific definition used by MINI.

The control module detected that the monitored Lambda correction after catalyst, Bank 2 - control value reached its permissible limit. This is the manufacturer-specific definition used by Audi.

The control module detected that the monitored Bank2: O2 (Lambda) Correction Behind Catalyst: Control value reached its permissible limit. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17585. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

The control module detected that the air-fuel mixture stayed leaner than the target despite full corrective control (System). This is the manufacturer-specific definition used by Volvo.