Home >> Jaguar >> 2017 >> XJR Base >> Repair and Diagnosis (Single Page) >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Power Steering Control Module (PSCM) -- XJ/X351 >> DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: Power Steering Control Module (PSCM) >> Description And Operation >> Power Steering Control Module (PSCM) >> B1304-07 Electronic Power Assisted Steering System - Mechanical failures >> Possible Causes