Home >> Land Rover >> 2021 >> Defender 110 X >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Gateway Module (GWM) -- Defender/L663 >> Diagnostic Trouble Code Index: Gateway Module (GWM) (G2801686) >> Description And Operation >> Gateway Module (GWM) >> DTC B1412-09: Quiescent Relay Box - Component failures >> Possible Causes