AutoCodes – GMC – U1862 GMC

U1862 GMC Code - Battery Energy Control Module Lost Communication With Serial Data Gateway Module

Quick Answer

Modules connected to the Controller Area Network (CAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Serial Data Gateway Module, Serial Data Gateway Module harness is open or shorted, Serial Data Gateway 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: U1862 GMC indicates Battery Energy Control Module Lost Communication With Serial Data Gateway Module.
Common causes: Common causes include Faulty Serial Data Gateway Module, Serial Data Gateway Module harness is open or shorted, Serial Data Gateway 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 819

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 Jun 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1862 GMC 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 U1862 GMC - Battery Energy Control Module Lost Communication With Serial Data Gateway Module - AutoCodes.com — U1862 GMC Code - Battery Energy Control Module Lost Communication With Serial Data Gateway Module

What does this mean?

What are the Possible Causes of the DTC U1862 GMC?

Faulty Serial Data Gateway Module
Serial Data Gateway Module harness is open or shorted
Serial Data Gateway Module circuit poor electrical connection

How to Fix the DTC U1862 GMC?

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 U1862 GMC 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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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 U1862 GMC Code

1. What are common symptoms of OBDII code U1862 in a GMC vehicle?

The common symptoms include issues with battery energy control, warning lights on the dashboard, and problems with communication between modules.

2. What can cause the U1862 code to appear in a GMC vehicle?

The U1862 code typically appears when there is a loss of communication between the battery energy control module and the serial data gateway module due to wiring issues, module failures, or software malfunctions.

3. How can I diagnose the U1862 code in my GMC vehicle?

Diagnosing the U1862 code usually involves using an OBDII scanner to retrieve the specific fault code and then inspecting the wiring connections between the battery energy control module and the serial data gateway module.

4. Can I still drive my GMC vehicle with the U1862 code present?

It is not recommended to drive your GMC vehicle with the U1862 code present, as it can lead to further electrical issues and potential safety hazards. It's best to address the problem promptly.

5. What are some repair tips for fixing the U1862 code in a GMC vehicle?

Repair tips for the U1862 code may include checking and repairing any damaged wiring, replacing faulty modules, updating software, and ensuring proper connections between modules.

6. How much does it typically cost to repair the U1862 code in a GMC vehicle?

The cost of repairing the U1862 code can vary depending on the extent of the issue, the need for new parts, and labor costs. It's recommended to consult a professional mechanic for an accurate estimate.

7. Can I reset the U1862 code in my GMC vehicle on my own?

You can attempt to reset the U1862 code using an OBDII scanner, but it's essential to address the underlying issue causing the code to prevent it from reoccurring.

8. Are there any recalls related to the U1862 code in GMC vehicles?

Recalls related to the U1862 code may vary by model and year. It's recommended to check with the manufacturer or a GMC dealership for any relevant recall information.

9. How urgent is it to fix the U1862 code in my GMC vehicle?

It is advisable to address the U1862 code promptly to prevent further electrical issues and ensure the safe operation of your GMC vehicle.

10. Can the U1862 code in a GMC vehicle cause any long-term damage if left untreated?

Leaving the U1862 code untreated can potentially lead to more severe electrical problems, affecting the overall performance and safety of the vehicle. It's best to address the issue as soon as possible.