Home >> Land Rover >> 2017 >> Discovery SE >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Diagnostic Trouble Code Index DTC: Power Steering Control Module (PSCM) -- Discovery/L462 >> Diagnostic Trouble Code Index DTC: Power Steering Control Module (PSCM) >> Description And Operation >> DTC B1304-04: Electronic Power Assisted Steering System - System internal failures >> Possible Causes