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
The U185C code for Chevrolet indicates that the Battery Charger Control Module has lost communication with the Hybrid/EV Powertrain Control Module 2 on the High Voltage Energy Management CAN Bus. Common causes include Wiring Issues: Faulty wiring connections or damaged wires can disrupt communication between the modules, Faulty Module: A malfunctioning Battery Charger Control Module or Hybrid/EV Powertrain Control Module 2 can cause communication errors, Software Glitch: An issue with the software programming of either module can lead to communication breakdowns. 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 Wiring Issues: Faulty wiring connections or damaged wires can disrupt communication between the modules, Faulty Module: A malfunctioning Battery Charger Control Module or Hybrid/EV Powertrain Control Module 2 can cause communication errors, Software Glitch: An issue with the software programming of either module can lead to communication breakdowns.
- 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 U185C Chevrolet Description
The U185C code for Chevrolet indicates that the Battery Charger Control Module has lost communication with the Hybrid/EV Powertrain Control Module 2 on the High Voltage Energy Management CAN Bus. This communication error can have significant implications for the vehicle's performance, particularly in hybrid or electric vehicles where the interaction between different modules is crucial for proper functioning. The High Voltage Energy Management CAN Bus is responsible for managing the flow of high voltage energy between various components in the vehicle, including the battery charger and powertrain control modules.
Common Causes of U185C Chevrolet
- Wiring Issues: Faulty wiring connections or damaged wires can disrupt communication between the modules.
- Faulty Module: A malfunctioning Battery Charger Control Module or Hybrid/EV Powertrain Control Module 2 can cause communication errors.
- Software Glitch: An issue with the software programming of either module can lead to communication breakdowns.
- CAN Bus Problem: A fault in the High Voltage Energy Management CAN Bus itself can prevent proper communication between modules.
Symptoms of U185C Chevrolet
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Reduced Power: The vehicle may experience a decrease in power output, affecting acceleration and overall performance.
- Charging Issues: The battery may not charge properly, leading to issues with starting the vehicle or maintaining sufficient power.
- Drivability Problems: The vehicle may exhibit erratic behavior or difficulty in driving smoothly, especially in hybrid or electric mode.
How to Fix U185C Chevrolet
- Diagnose the Issue: Use a diagnostic scan tool to identify the specific cause of the communication error between the modules.
- Check Wiring: Inspect the wiring connections between the modules for any damage or loose connections, repairing or replacing as needed.
- Test Modules: Test the Battery Charger Control Module and Hybrid/EV Powertrain Control Module 2 to determine if either is faulty and replace if necessary.
- Update Software: Ensure that the software programming for both modules is up to date and functioning correctly.
- Reset System: After completing repairs, reset the system and clear the diagnostic trouble codes to see if the issue has been resolved.
Cost to Fix U185C Chevrolet
The typical repair costs for addressing the U185C code on a Chevrolet can vary depending on the specific cause of the communication error. In general, parts and labor for this type of repair could range from $200 to $500. However, it's important to note that the actual cost can be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the extent of the repairs needed. Diagnostic time and labor rates at auto repair shops can range from $80 to $150 per hour, so it's advisable to check with local shops for a more accurate estimate.
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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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