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U2105 Chevrolet Code - Lost Communications With Engine Control Module

- Code Popularity: 7,908 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jun 15, 2020
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|Code U2105 Chevrolet Possible Causes

  • Faulty Engine Control Module (ECM)
  • Engine Control Module harness is open or shorted
  • Engine Control Module circuit poor electrical connection

|How do I Fix the Code U2105 Chevrolet?

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.

Does your Chevrolet have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code U2105 Chevrolet?

Labor: 1.0

The cost of diagnosing the U2105 Chevrolet 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 Code U2105 Chevrolet Possible Symptoms?

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

|Code U2105 Chevrolet 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. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. Each message contains the identification number of the transmitter module. A module with a CAN serial data circuits malfunction or which loses power during the current ignition cycle will have a Loss of Communication Diagnostic Trouble Code (DTC) set by other modules that depend on information from that failed module. If any of the CAN circuit are shorted to battery voltage, ground, or between them no communication is possible on the CAN serial data bus, a Diagnostic Trouble Code will set.

OBDII Code U2105 Chevrolet - Lost Communications With Engine Control Module - AutoCodes.com
U2105 Chevrolet Code - Lost Communications With Engine Control Module

|Need More Information on the U2105 Chevrolet Code?

Need more information on how to fix the U2105 Chevrolet code? Get Access to Factory Service Manuals

|Need Help with the U2105 Chevrolet Code?

Get the U2105 Chevrolet code diagnosed by a professional: Find a repair shop in your area

|Code U2105 Chevrolet comments

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