Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Image Processing Module (IPMA) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Image Processing Module (IPMA) (G2374101) >> DTC B151F-31: Auxiliary Cooling Fan - No signal >> Possible Causes