U0028-88 Vehicle Communication Bus A - Bus Off: Action

NOTE: This DTC will cause the warning "SOS limited functionality" to be displayed on the instrument cluster

Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary