U185C Chevrolet Code - Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 On High Voltage Energy Management CAN Bus
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 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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
- U185C Chevrolet indicates Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 On High Voltage Energy Management CAN Bus.
- Common causes
- Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 U185C Chevrolet Description
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 2 on high voltage energy management 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 2. If this message is not received within 1 s, this Diagnostic Trouble Code (DTC) is set.
What are the Possible Causes of the DTC U185C Chevrolet?
- Faulty Hybrid/EV Powertrain Control Module 2
- Hybrid/EV Powertrain Control Module 2 harness is open or shorted
- Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection
How to Fix the DTC U185C 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 U185C 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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Frequently Asked Questions about U185C Chevrolet Code
1. What are common symptoms of the U185C OBDII code in a Chevrolet related to the Battery Charger Control Module?
- Common symptoms include the hybrid/EV system not charging properly, inability to start the vehicle, and warning lights on the dashboard.
2. What can cause the U185C code to trigger in a Chevrolet?
- The code U185C is triggered when there is a communication failure between the Battery Charger Control Module and the Hybrid/EV Powertrain Control Module 2 on the high voltage energy management CAN bus.
3. How can I diagnose the U185C code in my Chevrolet?
- Diagnosing the U185C code requires using a professional OBDII scanner to retrieve the specific fault codes related to the communication failure between modules.
4. What are some repair tips for fixing the U185C code in a Chevrolet?
- Repairing the U185C code typically involves checking and repairing any damaged wiring or connections between the Battery Charger Control Module and the Hybrid/EV Powertrain Control Module 2.
5. Can I drive my Chevrolet with the U185C code present?
- It is not recommended to drive your Chevrolet with the U185C code present, as it can affect the proper operation of the hybrid/EV system and potentially lead to further damage.
6. How much does it cost to repair the U185C code in a Chevrolet?
- The cost to repair the U185C code can vary depending on the extent of the issue and the specific repairs needed. It is recommended to consult with a professional mechanic for an accurate estimate.
7. Is the U185C OBDII code specific to certain Chevrolet models?
- The U185C code related to the Battery Charger Control Module lost communication is typically found in Chevrolet hybrid or electric vehicles equipped with the high voltage energy management system.
8. Can a DIY enthusiast fix the U185C code in a Chevrolet?
- While some basic troubleshooting steps can be taken by a DIY enthusiast, repairing the U185C code may require specialized tools and expertise, so it is recommended to consult with a professional mechanic.
9. How urgent is it to address the U185C code in a Chevrolet?
- It is important to address the U185C code promptly to ensure the proper functioning of the hybrid/EV system and prevent any potential safety hazards or further damage to the vehicle.
10. Are there any recalls related to the U185C code in Chevrolet vehicles?
- It is recommended to check with Chevrolet or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to the U185C OBDII code and the communication failure between modules.
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