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Home >> Dodge and Ram >> 2021 >> ProMaster City Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> (Instrument Cluster - Electrical Diagnostics) >> DTC Troubleshooting >> U1801-08-Lin Fault - Bus Signal/Message Failure >> Possible Causes

Possible Causes

Possible Causes
LIN BUS CIRCUIT SHORTED TO GROUND
LIN BUS CIRCUIT OPEN
LIN BUS CIRCUIT SHORTED TO VOLTAGE
LIN BUS COMPONENT(S) OR MODULE(S)
INSTRUMENT PANEL CLUSTER (IPC)

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