U1887 Code - Energy Storage Control Module Lost Communication With Starter/Generator 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 Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator 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
- U1887 indicates Energy Storage Control Module Lost Communication With Starter/Generator Control Module.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator 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.
Code U1887 Description
What are the Possible Causes of the DTC U1887?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
- Faulty Energy Storage Control Module (ESCM)
How to Fix the DTC U1887?
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 U1887 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.
Need more information about the U1887 code?
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Get the U1887 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- U1887 Buick — Energy Storage Control Module Lost Communication With Starter/Generator Control Module
- U1887 Cadillac — Energy Storage Control Module Lost Communication With Starter/Generator Control Module
- U1887 Chevrolet — Energy Storage Control Module Lost Communication With Starter/Generator Control Module
- U1887 GMC — Energy Storage Control Module Lost Communication With Starter/Generator Control Module
Frequently Asked Questions about U1887 Code
1. What are common symptoms of OBDII code U1887?
- Common symptoms include difficulty starting the vehicle, reduced power efficiency, and potential issues with the hybrid system.
2. What are the possible causes of OBDII code U1887?
- The code U1887 could be triggered by a faulty energy storage control module, a malfunctioning starter/generator control module, wiring issues, or communication network problems.
3. How do I diagnose OBDII code U1887?
- Diagnosis typically involves using a diagnostic scan tool to retrieve the code, checking the wiring and connections between the energy storage control module and starter/generator control module, and testing the modules for proper functionality.
4. Can I still drive with OBDII code U1887 present?
- It is not recommended to drive with the U1887 code active, as it can lead to further damage to the vehicle's hybrid system and may result in more severe issues over time.
5. How can I repair OBDII code U1887?
- Repairing the U1887 code usually involves addressing the root cause of the communication error, which may include replacing the energy storage control module, the starter/generator control module, or repairing any damaged wiring.
6. Is it necessary to reset the code after repairing OBDII code U1887?
- Yes, it is important to clear the code using a diagnostic scan tool after the repair to ensure that the issue has been resolved and to prevent the code from reappearing.
7. Can a DIY enthusiast fix OBDII code U1887 at home?
- While some aspects of diagnosing and repairing the U1887 code may be possible for experienced DIY enthusiasts, it is recommended to consult a professional mechanic or technician due to the complexity of hybrid system components.
8. Are there any preventative maintenance tips to avoid OBDII code U1887?
- Regular maintenance of the hybrid system, including checking connections and wiring, can help prevent issues that may lead to the U1887 code. Additionally, addressing any warning signs promptly can help avoid more severe problems.
9. How long does it take to repair OBDII code U1887?
- The time required to repair the U1887 code can vary depending on the specific cause of the issue, the availability of parts, and the expertise of the technician. It is best to consult with a professional for an accurate estimate.
10. Can OBDII code U1887 be intermittent or permanent?
- The U1887 code can be intermittent, meaning it may come and go, especially if the issue is related to loose connections or wiring. However, if the problem persists, it is considered a permanent fault that needs to be addressed.
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