Home >> Jaguar >> 2012 >> XJ Base >> Repair and Diagnosis (Single Page) >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Seat Module (Driver/Passenger/Rear Left/Rear Right) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Seat Module (Driver/Passenger/Rear Left/Rear Right) >> Description And Operation >> Seat Module (Driver/Passenger/Rear Left/Rear Right) >> B1507-23 Digital input Bank '1' switch #1 - Signal Stuck Low >> Possible Causes