U2603 GMC Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 1
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid/EV Battery Interface Control Module 1, Hybrid/EV Battery Interface Control Module 1 harness is open or shorted, Hybrid/EV Battery Interface Control Module 1 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
- U2603 GMC indicates Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 1.
- Common causes
- Common causes include Faulty Hybrid/EV Battery Interface Control Module 1, Hybrid/EV Battery Interface Control Module 1 harness is open or shorted, Hybrid/EV Battery Interface Control Module 1 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 U2603 GMC Description
The scan tool does not communicate the Hybrid/EV Battery Interface Control Modules 1 on Battery Energy Control Module dedicated bus.
The Diagnostic Trouble Code (DTC) will set when there is no temperature report message from Hybrid/EV Battery Interface Control Modules 1 to Battery Energy Control Module within 4s.
What are the Possible Causes of the DTC U2603 GMC?
- Faulty Hybrid/EV Battery Interface Control Module 1
- Hybrid/EV Battery Interface Control Module 1 harness is open or shorted
- Hybrid/EV Battery Interface Control Module 1 circuit poor electrical connection
- Faulty Battery Energy Control Module
How to Fix the DTC U2603 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 U2603 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.
Need more information about the U2603 GMC code?
Need more information on how to fix the U2603 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U2603 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about U2603 GMC Code
1. What are the common symptoms of OBDII code U2603 GMC?
- Common symptoms include loss of communication between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 1, which can result in issues with hybrid/EV system operation.
2. What are the possible causes of OBDII code U2603 GMC?
- Possible causes include damaged wiring, faulty connectors, issues with the control modules themselves, or a weak or failing hybrid/EV battery.
3. How can I diagnose OBDII code U2603 GMC?
- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the code, followed by inspecting the wiring and connectors between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 1.
4. Can I still drive my vehicle with OBDII code U2603 GMC present?
- It is not recommended to drive the vehicle with this code present, as it can indicate a problem with the hybrid/EV system that may affect the vehicle's performance and safety.
5. How can I repair OBDII code U2603 GMC?
- Repairing this code often involves repairing or replacing damaged wiring, fixing faulty connectors, or replacing the affected control modules. In some cases, a battery replacement may also be necessary.
6. Will resetting the code make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, the code is likely to return.
7. Is it safe to attempt DIY repairs for OBDII code U2603 GMC?
- DIY repairs can be attempted for this code if you have the necessary tools, knowledge, and experience working with automotive electrical systems. Otherwise, it is recommended to seek professional assistance.
8. How much does it typically cost to repair OBDII code U2603 GMC?
- The cost of repairing this code can vary depending on the underlying issue and the extent of the repairs needed. It is recommended to obtain quotes from reputable mechanics or dealerships.
9. Can extreme weather conditions cause OBDII code U2603 GMC to trigger?
- Extreme weather conditions can potentially contribute to triggering this code if they lead to issues with the electrical connections or components in the hybrid/EV system.
10. Are there any preventative measures I can take to avoid OBDII code U2603 GMC?
- Regularly inspecting the electrical components, connectors, and wiring related to the hybrid/EV system, as well as ensuring proper maintenance of the hybrid/EV battery, can help prevent issues that may trigger this code.
Discuss the causes and fixes for U2603 GMC OBDII Code
Code U2603 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
