U0140 High Network

Lost Communication With Body Control Module

Common Causes

Failed BCM
CAN bus fault to BCM
BCM power or ground fault
Corroded BCM connector

Common Symptoms

Multiple Warning Lights On Communication / Network Fault

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Quick Info

Code U0140
System Network
Severity High

Disclaimer

This information is for diagnostic guidance only. Always verify repairs with a qualified technician before performing safety-critical work.

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