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U0140

Overview

Code

U0140

Code Type

U

Code Class

U0

System

Network

Severity Level

Medium

Emissions Related

false

Drivability Impact

Minor

Diagnostic Protocol

CAN

Freeze Frame Useful

false

Code Definition

Diagnostic trouble code U0140 indicates lost communication with the body control module (BCM)

Symptoms

Multiple electrical issues

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Body electronics communication

Possible Causes

BCM power loss

Diagnostic Steps

1 Verify BCM power and ground 2 Inspect CAN wiring

Drive Safety Notes

Body functions may be inoperative

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