Home >> Jaguar >> 2011 >> XJ Base >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Image Processing Module (IPMA) -- XJ/X351 >> DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: Image Processing Module (IPMA) >> Description And Operation >> Image Processing Control Module (IPCM) >> DTC B151F-91: Auxiliary Cooling Fan - Parametric >> Possible Causes