U1885 GMC Code - Battery Energy Control Module Lost Communication With Hybrid/EV Powertrain Control Module
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid/EV Powertrain Control Module, Hybrid/EV Powertrain Control Module harness is open or shorted, Hybrid/EV Powertrain 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
- U1885 GMC indicates Battery Energy Control Module Lost Communication With Hybrid/EV Powertrain Control Module.
- Common causes
- Common causes include Faulty Hybrid/EV Powertrain Control Module, Hybrid/EV Powertrain Control Module harness is open or shorted, Hybrid/EV Powertrain 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 U1885 GMC Description
This diagnostic is used to check the loss of communication with Hybrid/EV Powertrain Control Module 1 on high-speed General Motor Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module 1. If this message is not received within 3 s, then this Diagnostic Trouble Code (DTC) is set.
What are the Possible Causes of the DTC U1885 GMC?
- Faulty Hybrid/EV Powertrain Control Module
- Hybrid/EV Powertrain Control Module harness is open or shorted
- Hybrid/EV Powertrain Control Module circuit poor electrical connection
- Faulty Battery Energy Control Module
How to Fix the DTC U1885 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 U1885 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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Frequently Asked Questions about U1885 GMC Code
1. What are the common symptoms of OBDII code U1885 in a GMC vehicle?
- Common symptoms include the check engine light coming on, poor fuel efficiency, and issues with the hybrid or electric powertrain system.
2. What are the possible causes of OBDII code U1885 in a GMC vehicle?
- Possible causes include a faulty battery energy control module, a malfunctioning hybrid/EV powertrain control module, wiring issues, or a communication network problem.
3. How can I diagnose the U1885 code in my GMC vehicle?
- Diagnosis involves using a professional OBDII scanner to read the code, checking for other related codes, inspecting wiring connections, and testing the battery energy control module and powertrain control module.
4. What are the repair options for fixing code U1885 in a GMC vehicle?
- Repair options may include repairing or replacing damaged wiring, resetting the battery energy control module, updating software, or replacing the affected modules if necessary.
5. Can I still drive my GMC vehicle with OBDII code U1885 present?
- It is not recommended to drive the vehicle with this code present, as it may lead to further damage to the hybrid or electric powertrain system.
6. How much does it typically cost to repair OBDII code U1885 in a GMC vehicle?
- The cost of repair can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
7. Are there any preventative measures to avoid OBDII code U1885 in a GMC vehicle?
- Regular maintenance, such as checking the battery energy control module and powertrain control module connections, can help prevent issues that may trigger this code.
8. Can a DIY enthusiast repair OBDII code U1885 in a GMC vehicle?
- While some basic troubleshooting steps can be performed by DIY enthusiasts, it is recommended to consult with a professional mechanic for accurate diagnosis and repair of this code.
9. Will resetting the OBDII code U1885 make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear.
10. Is OBDII code U1885 specific to GMC vehicles, or can it occur in other car makes and models?
- While this specific code is identified with GMC vehicles, similar communication issues between modules can occur in other car makes and models, leading to different OBDII codes.
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