Home >> Land Rover >> 2020 >> Range Rover Velar R-Dynamic HSE >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Range Rover Velar/L560 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Transfer Case Control Module (TCCM) (G2933770) >> P1889-1F: Oil Pressure Pump Performance - Circuit intermittent >> Possible Causes