AutoCodes – Buick – U182D Buick

U182D Buick Code - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. 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: U182D Buick indicates Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 412

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 09, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U182D Buick Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Codes (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices in turn set a DTC associated with the loss of state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC.

OBDII Code U182D Buick - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus - AutoCodes.com — U182D Buick Code - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus

What does this mean?

What are the Possible Causes of the DTC U182D Buick?

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
Faulty Body Control Module (BCM)

How to Fix the DTC U182D Buick?

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 U182D Buick 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 U182D Buick code?

Need more information on how to fix the U182D Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U182D Buick code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U182D Buick Code

1. What are common symptoms of OBDII code U182D in a Buick related to lost communication with Hybrid/EV Powertrain Control Module 2?

- Common symptoms include loss of power, poor fuel efficiency, and potential drivability issues.

2. What are possible causes of the U182D code in a Buick indicating a communication problem with the Hybrid/EV Powertrain Control Module 2?

- Causes may include faulty wiring or connectors, a malfunctioning control module, or issues with the communication bus network.

3. How can I diagnose the U182D code in my Buick indicating a communication problem with the Hybrid/EV Powertrain Control Module 2?

- Diagnosing requires specialized diagnostic tools to check for communication faults, inspecting wiring and connectors, and testing the control module.

4. Are there any DIY repair tips for addressing the U182D code in a Buick related to lost communication with the Hybrid/EV Powertrain Control Module 2?

- DIY repair is not recommended due to the complexity of diagnosing communication issues in hybrid/EV powertrains. It's best to consult a professional mechanic.

5. Can driving with the U182D code present in a Buick be harmful to the vehicle?

- Continuing to drive with the U182D code may cause further damage to the hybrid/EV powertrain system and potentially lead to more severe issues.

6. How much can I expect to spend on repairing the U182D code in a Buick involving lost communication with Hybrid/EV Powertrain Control Module 2?

- Repair costs can vary depending on the exact cause of the communication issue, but it's advisable to budget for potentially significant expenses.

7. Is it safe to ignore the U182D code in my Buick if the vehicle seems to be running fine?

- Ignoring the U182D code may lead to unforeseen issues in the hybrid/EV powertrain system, so it's best to address the problem promptly to prevent further damage.

8. Can a software update fix the U182D code in a Buick related to communication problems with the Hybrid/EV Powertrain Control Module 2?

- In some cases, a software update may resolve communication issues, but it's crucial to diagnose the root cause before attempting any repairs.

9. Will resetting the OBDII code temporarily clear the U182D issue in a Buick?

- Resetting the code may temporarily clear the warning light, but if the underlying communication problem persists, the code is likely to return.

10. How often should I have the communication system in my Buick checked to prevent issues like the U182D code from occurring?

- Regular maintenance and inspections, especially for hybrid/EV systems, are recommended to catch potential communication issues early and prevent codes like U182D from appearing.