DTC U2621-14: Door-Electrical Supply Unit (Passenger's Side) Power Supply Circuit (B2+) Malfunction [(BCM)]: Outline

DTC U2621:14 (BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Door-electrical supply unit (passenger's side) power supply circuit (B2+) malfunction
Detection condition	The door-electrical supply unit (passenger's side) detects an open circuit or short to ground in the power supply circuit (B2+).
Fail-safe	Not applicable
Possible cause	Door-electrical supply unit (passenger's side) connector or terminal malfunction Short to ground or open circuit in door-electrical supply unit (passenger's side) power supply circuit (B2+) Door-electrical supply unit (passenger's side) malfunction Body control module (BCM) malfunction
Courtesy of MAZDA MOTORS CORP.