AutoCodes – Buick – U182E Buick

U182E Buick Code - Drive Motor Control Module 1 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: U182E Buick indicates Drive Motor Control Module 1 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.

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Code Popularity 421

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U182E 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 Code (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 the health message, detect its absence; those devices in turn set a DTC associated with the loss of the 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. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U182E Buick - Drive Motor Control Module 1 Lost Communication With Hybrid/EV Powertrain Control Module 2 On Powertrain Expansion Communication Bus - AutoCodes.com — U182E Buick Code - Drive Motor Control Module 1 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 U182E 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 U182E 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 U182E 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.

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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 U182E Buick Code

1. What are the common symptoms of OBDII code U182E in a Buick related to Drive Motor Control Module 1 communication loss with Hybrid/EV Powertrain Control Module 2?

- Common symptoms include a check engine light, reduced hybrid system performance, and potential drivability issues.

2. What could cause the U182E code in a Buick indicating Drive Motor Control Module 1 has lost communication with Hybrid/EV Powertrain Control Module 2?

- Possible causes include wiring harness issues, loose connections, faulty modules, software glitches, or a malfunctioning communication bus.

3. How can I diagnose the U182E code in my Buick related to communication loss between Drive Motor Control Module 1 and Hybrid/EV Powertrain Control Module 2?

- Diagnosis typically involves checking the wiring connections, inspecting the modules for faults, scanning for other related codes, and performing communication tests.

4. Is it safe to continue driving my Buick with the U182E code indicating a communication problem between Drive Motor Control Module 1 and Hybrid/EV Powertrain Control Module 2?

- It is not recommended to drive the vehicle extensively with this code present, as it can affect the hybrid system's performance and reliability.

5. How can I reset the U182E code in my Buick after addressing the communication issue between Drive Motor Control Module 1 and Hybrid/EV Powertrain Control Module 2?

- The code can be cleared using an OBDII scanner, but it is important to ensure that the underlying communication problem has been resolved first.

6. Can a DIY enthusiast repair the U182E code related to Drive Motor Control Module 1 communication loss with Hybrid/EV Powertrain Control Module 2 in a Buick?

- While basic checks like inspecting connections can be done by DIYers, diagnosing and repairing more complex issues may require professional expertise and specialized tools.

7. Will fixing the U182E code in my Buick related to communication issues between Drive Motor Control Module 1 and Hybrid/EV Powertrain Control Module 2 be costly?

- The cost of repair can vary depending on the root cause of the communication problem, but it is advisable to address the issue promptly to prevent further damage.

8. Are there any common recalls or technical service bulletins related to the U182E code in Buick vehicles?

- It is recommended to check with Buick dealerships or online resources for any relevant recalls or technical service bulletins specific to the U182E code and its associated components.

9. Can extreme weather conditions or rough driving lead to the U182E code appearing in a Buick?

- While extreme conditions can sometimes trigger communication issues, the U182E code is more likely to be caused by underlying electrical or module faults rather than external factors.

10. Is it necessary to visit a dealership for repairs when dealing with the U182E code in a Buick, or can independent repair shops handle the issue?

- Independent repair shops with experience in hybrid and electric vehicle systems can often diagnose and repair the U182E code, but complex cases may require dealership expertise.