AutoCodes – Chevrolet – U1897 Chevrolet

U1897 Chevrolet Code - Starter/Generator Control Module Lost Communication With Energy Storage Control Module

Quick Answer

Modules connected to the class 2 and high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Energy Storage Control Module (ESCM), Energy Storage Control Module harness is open or shorted, Energy Storage 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: U1897 Chevrolet indicates Starter/Generator Control Module Lost Communication With Energy Storage Control Module.
Common causes: Common causes include Faulty Energy Storage Control Module (ESCM), Energy Storage Control Module harness is open or shorted, Energy Storage 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 1,061

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 U1897 Chevrolet Description

Modules connected to the class 2 and 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 Diagnostic Trouble Code (DTC) is reported on a class 2 link to the scan tool by Powertrain Control Module (PCM) even if they may be set by different modules. The DTC will set when a node alive message has not been received from an identified module within the last 5 seconds after establishing class 2 serial data communication, or a supervised high-speed GMLAN message has not been received.

OBDII Code U1897 Chevrolet - Starter/Generator Control Module Lost Communication With Energy Storage Control Module - AutoCodes.com — U1897 Chevrolet Code - Starter/Generator Control Module Lost Communication With Energy Storage Control Module

What does this mean?

What are the Possible Causes of the DTC U1897 Chevrolet?

Faulty Energy Storage Control Module (ESCM)
Energy Storage Control Module harness is open or shorted
Energy Storage Control Module circuit poor electrical connection
Faulty Starter/Generator Control Module (SGCM)

How to Fix the DTC U1897 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 U1897 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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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 U1897 Chevrolet Code

1. What are the common symptoms of OBDII code U1897 in a Chevrolet related to the Starter/Generator Control Module?

- Common symptoms include issues with starting the vehicle, poor performance, and possible illumination of the Check Engine Light.

2. What can cause the OBDII code U1897 related to the Starter/Generator Control Module in a Chevrolet?

- This code is typically triggered when there is a communication breakdown between the Starter/Generator Control Module and the Energy Storage Control Module.

3. How serious is the U1897 OBDII code in a Chevrolet?

- While the vehicle may still operate, it is important to address this code promptly to prevent potential issues with starting and performance.

4. How can I diagnose the U1897 code in my Chevrolet?

- Diagnosing this code usually involves using a professional OBDII scanner to retrieve the specific fault codes and pinpoint the communication issue between the modules.

5. What are some repair tips for fixing the U1897 code in a Chevrolet?

- Repair may involve checking the wiring connections between the Starter/Generator Control Module and the Energy Storage Control Module, ensuring they are secure and free of corrosion.

6. Can a DIY enthusiast fix the U1897 code in a Chevrolet?

- While some basic troubleshooting steps can be taken, resolving communication issues between control modules may require advanced diagnostic tools and expertise best handled by a professional mechanic.

7. Is it safe to continue driving with the U1897 code in a Chevrolet?

- It is generally not recommended to continue driving with unresolved OBDII codes, as they can lead to more significant issues over time.

8. How much does it cost to repair the U1897 code in a Chevrolet?

- The cost of repair can vary depending on the exact cause of the communication issue, but it is advisable to budget for diagnostic fees and potential parts replacement.

9. Can weather conditions affect the occurrence of the U1897 code in a Chevrolet?

- Extreme weather conditions or water exposure can sometimes lead to electrical issues that may trigger communication faults between control modules in the vehicle.

10. Are there any recalls or service bulletins related to the U1897 code in Chevrolet vehicles?

- It is recommended to check with Chevrolet dealerships or online resources for any relevant recalls or service bulletins related to the U1897 code and associated components.