Home >> Land Rover >> 2021 >> Defender 90 First Edition >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Infotainment Compute Control Module (ICCM) -- Defender/L663 >> Diagnostic Trouble Code Index - DTC: Infotainment Compute Control Module (ICCM) (G2400897) >> Description And Operation >> Infotainment Compute Control Module >> DTC B12B8-01: USB Port #2 - General electrical failure >> Possible Causes