AutoCodes – Chevrolet – U0105 Chevrolet

U0105 Chevrolet Code - Lost Communication With Fuel Injector Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Fuel Injector Control Module, Fuel Injector Control Module harness is open or shorted, Fuel Injector Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U0105 Chevrolet indicates Lost Communication With Fuel Injector Control Module.
Common causes: Common causes include Faulty Fuel Injector Control Module, Fuel Injector Control Module harness is open or shorted, Fuel Injector Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,883

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0105 Chevrolet Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) 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, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Fuel Injector Control Module has not been received.

OBDII Code U0105 Chevrolet - Lost Communication With Fuel Injector Control Module - AutoCodes.com — U0105 Chevrolet Code - Lost Communication With Fuel Injector Control Module

What does this mean?

What are the Possible Causes of the DTC U0105 Chevrolet?

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

How to Fix the DTC U0105 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0105 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need more information on how to fix the U0105 Chevrolet code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0105 Chevrolet Code

1. What are the common symptoms of OBDII code U0105 in a Chevrolet related to lost communication with the Fuel Injector Control Module?

- Common symptoms include engine misfires, rough idling, stalling, and poor fuel efficiency.

2. What are the possible causes of OBDII code U0105 in a Chevrolet indicating lost communication with the Fuel Injector Control Module?

- Possible causes include a faulty Fuel Injector Control Module, damaged wiring or connectors, software issues, or a defective Engine Control Module (ECM).

3. How can I diagnose the issue causing OBDII code U0105 in my Chevrolet related to lost communication with the Fuel Injector Control Module?

- Diagnosis typically involves checking the wiring and connectors for any damage, testing the Fuel Injector Control Module, and scanning for additional trouble codes.

4. Can I still drive my Chevrolet with OBDII code U0105 indicating lost communication with the Fuel Injector Control Module?

- It is not recommended to drive your vehicle with this issue as it can lead to poor engine performance and potential further damage.

5. How can I repair OBDII code U0105 in my Chevrolet due to lost communication with the Fuel Injector Control Module?

- Repair may involve replacing the Fuel Injector Control Module, repairing damaged wiring or connectors, updating software, or reprogramming the ECM.

6. Are there any DIY tips for troubleshooting OBDII code U0105 in a Chevrolet related to lost communication with the Fuel Injector Control Module?

- DIY tips include checking for loose connections, inspecting wires for damage, and ensuring all modules are securely connected and functioning properly.

7. Will resetting the OBDII code U0105 in my Chevrolet solve the issue of lost communication with the Fuel Injector Control Module?

- Resetting the code may temporarily clear the warning light, but the underlying issue causing the communication loss will still need to be addressed for a permanent solution.

8. How much does it typically cost to repair OBDII code U0105 in a Chevrolet related to lost communication with the Fuel Injector Control Module?

- Repair costs can vary depending on the exact cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

9. Can extreme weather conditions or environmental factors trigger OBDII code U0105 in a Chevrolet indicating lost communication with the Fuel Injector Control Module?

- While rare, extreme weather conditions or environmental factors like moisture ingress can potentially cause communication issues leading to this code.

10. Is OBDII code U0105 specific to Chevrolet vehicles, or can it be found in other car brands as well?

- The U0105 code indicating lost communication with the Fuel Injector Control Module is not specific to Chevrolet and can be found in other car brands using OBDII systems.