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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Body Control Module (BCM) - DTCS B1041-14 To B104A-15) >> DTC Troubleshooting >> B1049-12 Windshield Heater Command - Circuit Short To Battery >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ELECTRIC WINDSHIELD DE-ICER CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
ELECTRIC WINDSHIELD DE-ICER CONTROL CIRCUIT SHORTED TO VOLTAGE
FRONT DE-ICER RELAY
BODY CONTROL MODULE (BCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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