Home >> Jaguar >> 2016 >> XF Prestige, RWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- XF/X260 >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCM) >> Description And Operation >> Transfer Case Control Module (TCM) >> DTC P1889-18: Oil Pressure Pump Performance - Circuit current below threshold >> Possible Causes