DTC P0477-11: Exhaust Pressure Control Valve "A" Low - Circuit short to ground: Action

WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, and 2016 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

Using the Jaguar Land Rover Approved Diagnostic Equipment, check and compare datalogging signals - Low Pressure EGR Exhaust Flap Motor Duty Cycle - Commanded (05D2) - Low Pressure EGR Exhaust Flap Position - Measured (05CC) - Low Pressure EGR Exhaust Flap Position Sensor Voltage (05CB). Ensure the valve operates smoothly and the Measured position follows the Commanded position. If the position signal does not change smoothly in proportion to the commands, check the mechanical operation of the valve. Repair as necessary
Refer to the appropriate system wiring diagram and check the exhaust pressure control valve circuit for short circuit to ground. Repair the circuit as necessary, clear the DTCs and retest
If the problem persists, check and install a new exhaust pressure control valve as required. If the valve is replaced use the Jaguar Land Rover Approved Diagnostic Equipment and perform routine - Exhaust valve adaption