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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Body Control Module (BCM) - DTCS U1750-86 To U191A-86) >> DTC Troubleshooting >> U1801-08 Lin 1 - Bus Signal/Message Failures >> 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
LIN BUS 1 CIRCUIT SHORTED TO VOLTAGE
LIN BUS 1 CIRCUIT SHORTED TO GROUND
WIRELESS CHARGE PAD MODULE (WCPM)
CLOCKSPRING
BODY CONTROL MODULE (BCM)

Perform the COMMUNICATION DIAGNOSTIC PROCEDURE. Refer to COMMUNICATION DIAGNOSTIC PROCEDURE .