Home >> Jaguar >> 2015 >> XKR-S 2D Convertible >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- XK/X150 >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) >> Description And Operation >> Transmission Control Module [TCM] >> DTC P0721-64: Output Shaft Speed Sensor Circuit Range/Performance - Signal plausibility failure >> Possible Causes