AutoCodes – GMC – U0125 GMC

U0125 GMC Code - Lost Communication with Multi-Axis Acceleration Sensor Module

Quick Answer

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Multi-Axis Acceleration Sensor Module, Multi-Axis Acceleration Sensor Module harness is open or shorted, Multi-Axis Acceleration Sensor 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: U0125 GMC indicates Lost Communication with Multi-Axis Acceleration Sensor Module.
Common causes: Common causes include Faulty Multi-Axis Acceleration Sensor Module, Multi-Axis Acceleration Sensor Module harness is open or shorted, Multi-Axis Acceleration Sensor 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.

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Code Popularity 3,437

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 Mar 25, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0125 GMC Description

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages need to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, and some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Multi-Axis Acceleration Sensor Module has not been received.

OBDII Code U0125 GMC - Lost Communication with Multi-Axis Acceleration Sensor Module - AutoCodes.com — U0125 GMC Code - Lost Communication with Multi-Axis Acceleration Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0125 GMC?

Faulty Multi-Axis Acceleration Sensor Module
Multi-Axis Acceleration Sensor Module harness is open or shorted
Multi-Axis Acceleration Sensor Module circuit poor electrical connection

How to Fix the DTC U0125 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 U0125 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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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 U0125 GMC Code

1. What are the common symptoms of OBDII code U0125 GMC?

- Common symptoms include the illumination of the Check Engine Light (CEL), loss of communication with the Multi-Axis Acceleration Sensor Module, and potential issues with stability control systems.

2. What can cause the U0125 GMC code to trigger?

- The code U0125 is typically triggered by a communication error between the vehicle's onboard computer and the Multi-Axis Acceleration Sensor Module, which may be caused by wiring issues, module failure, or software glitches.

3. How serious is the U0125 GMC code?

- The U0125 code is considered moderately serious as it can affect the proper functioning of stability control systems and impact the vehicle's overall safety and performance. It is advisable to address this issue promptly.

4. How can I diagnose the U0125 GMC code?

- Diagnosing the U0125 code involves using a professional OBDII scanner to retrieve the specific error code, inspecting the wiring harness for any damage, checking the connections to the Multi-Axis Acceleration Sensor Module, and verifying the module's functionality.

5. What are some DIY repair tips for fixing the U0125 GMC code?

- DIY repair tips include checking and repairing any damaged wiring, ensuring proper connections to the Multi-Axis Acceleration Sensor Module, and resetting the error code using an OBDII scanner. If the issue persists, seeking professional help is recommended.

6. Can driving with the U0125 GMC code cause further damage?

- Continuing to drive with the U0125 code may lead to compromised stability control systems and potential safety hazards. It is advisable to address the issue promptly to avoid further damage or risks.

7. How much does it typically cost to repair the U0125 GMC code?

- The cost of repairing the U0125 code can vary depending on the underlying cause. Simple fixes like repairing wiring may cost less, while replacing the Multi-Axis Acceleration Sensor Module or addressing software issues could be more expensive.

8. Is it safe to clear the U0125 GMC code without fixing the underlying issue?

- Clearing the U0125 code without addressing the underlying cause is not recommended, as it may temporarily remove the error message but will not resolve the communication issue between the vehicle's systems.

9. Can a mechanic help me fix the U0125 GMC code?

- Yes, a qualified mechanic with experience in diagnosing and repairing OBDII codes can help you identify the root cause of the U0125 code, perform necessary repairs or replacements, and ensure the proper functioning of the vehicle's systems.

10. How can I prevent the U0125 GMC code from reoccurring?

- To prevent the U0125 code from reoccurring, it is essential to address any wiring issues promptly, maintain proper connections to the Multi-Axis Acceleration Sensor Module, and follow recommended maintenance schedules for your vehicle.