Home >> Jaguar >> 2012 >> XJ Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Switch (TCS) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Switch (TCS) >> Description And Operation >> Transmission Control Switch (TCS) >> B1142-62 Ignition Status 1 - Signal compare failure >> Possible Causes