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U2104 GMC Code - Controller Area Network Bus Reset Counter Overrun

- Code Popularity: 179 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Updated Feb 04, 2021
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|U2104 GMC code possible causes

  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

|How do I fix code U2104 GMC code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing U2104 GMC code

Labor: 1.0

The cost of diagnosing the U2104 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are U2104 GMC code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|U2104 GMC code description

Modules connected to the Controller Area Network (CAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. If no communication is detected on CAN serial data circuit, the Diagnostic Trouble Code (DTC) is set. A total non-communication condition may be caused by a short to battery or voltage on any of the CAN circuits or a short between the CAN high and low circuits.
The following modules communicate on CAN serial data bus: The Body Control Module (BCM), The Electronic Brake Control Module (EBCM), The Engine/Powertrain Control Module (ECM/PCM), and The Transmission Control Module (TCM).

OBDII Code U2104 Gmc - Controller Area Network Bus Reset Counter Overrun - AutoCodes.com
Controller Area Network Bus Reset Counter Overrun

|Need more information with the U2104 GMC code?

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|Need help with a U2104 GMC code?

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|U2104 GMC code comments

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