Home >> Land Rover >> 2022 >> Defender 90 >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Power Steering Control Module (PSCM) -- Defender/L663 >> Diagnostic Trouble Code Index - DTC: Power Steering Control Module (PSCM) (G2400908) >> Description And Operation >> Power Steering Control Module (PSCM) >> DTC B1304-04: Electronic Power Assisted Steering System - System internal failures >> Possible Causes