DTC B1480-29: Window Position Sensor - Signal invalid: Action
- Refer to the appropriate system wiring diagrams and check the door window regulator motor circuit for open circuit, high resistance
- Refer to the appropriate system wiring diagrams and check the door window regulator motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new door window regulator motor