P1728 Diagnostic Trouble Code (6 interpretations)

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

The control module detected a short circuit to battery voltage in the EMC - Open or circuit. This is the manufacturer-specific definition used by Hyundai.

The control module detected a fault associated with the Transmission component slipping 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 the fault condition "Incoherence of the torque information sent on the CAN" for the CAN communication. Documented for the Bosch EDC16C34 injection ECU (DV6TED4 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

The control module detected the fault condition "Torque not reliable due to an engine fault" for the Intersystems CAN. Documented for the Continental SID 807 injection ECU (DV6C 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

The control module judged the Different Wheel Speed Signals behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Volkswagen.