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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Body Control Module (BCM) - DTCS U0623-64 To U1702-87) >> DTC Troubleshooting >> U1408-87 IBS_3 (Intelligent Battery Sensor 3) - Missing Message >> 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
FUSED B+ CIRCUIT OPEN/HIGH RESISTANCE
IBS GROUND CIRCUIT OPEN/HIGH RESISTANCE
LIN BUS CIRCUIT OPEN/HIGH RESISTANCE
LIN BUS CIRCUIT SHORTED TO GROUND
INTELLIGENT BATTERY SENSOR (IBS)

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