Home >> Land Rover >> 2021 >> Defender 110 S >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Near Field Sensing Module B (NFSMB) 1 Camera System -- Defender/L663 >> Diagnostic Trouble Code Index - DTC: Near Field Sensing Module B (NFSMB) 1 Camera System (G2890040) >> Description And Operation >> Near Field Sensing Module B (NFSMB) >> DTC U3000-4B: Control Module - Over temperature >> Possible Causes