Home >> Jaguar >> 2014 >> XF Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) -- XF/X250 >> Diagnostic Trouble Code (DTC) Index DTC: Restraints Control Module (RCM) >> Description And Operation >> DTC P1934-29: Vehicle Speed Signal - Signal invalid >> Possible Causes