Engine-Codes - Generic - U1862

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U1862 Possible Causes

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

How is the U1862 code repair?

Start by checking 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.

What is the cost to diagnose the U1862 code

Labor: 1.0

The cost to diagnose the U1862 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

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

U1862 Meaning

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.

More Information

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Information for specific makes

  • U1862 BUICK Battery Energy Control Module Lost Communication With Serial Data Gateway Module
  • U1862 CADILLAC Battery Energy Control Module Lost Communication With Serial Data Gateway Module
  • U1862 CHEVROLET Battery Energy Control Module Lost Communication With Serial Data Gateway Module
  • U1862 GMC Battery Energy Control Module Lost Communication With Serial Data Gateway Module

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