DTC U2131-00: Communication Error With Electrical Supply Unit (ESU) [Vehicle Control Module]: Outline

DTC U2131:00 [VEHICLE CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with electrical supply unit (ESU)
Detection condition	The vehicle control module (VCM) cannot receive CAN signal from electrical supply unit (ESU) for 10 s.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause	Malfunction in CAN communication line between vehicle control module (VCM) and electrical supply unit (ESU) Electrical supply unit (ESU) malfunction Vehicle control module (VCM) malfunction (built into body control module (BCM)) Body control module (BCM) malfunction
System wiring diagram	Not applicable