AutoCodes – Generic – U2505

U2505 Code - Invalid Data Received From Human Machine Interface Control Module On MOST Bus

Quick Answer

Some devices are constantly receiving information from other devices through serial data communication network. Common causes include Reprogram Human Machine Interface Control Module, Faulty Human Machine Interface Control Module, Human Machine Interface Control Module harness is open or shorted. 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
U2505 indicates Invalid Data Received From Human Machine Interface Control Module On MOST Bus.
Common causes
Common causes include Reprogram Human Machine Interface Control Module, Faulty Human Machine Interface Control Module, Human Machine Interface Control Module harness is open or shorted.
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 1,303
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 17, 2020
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Code U2505 Description

Some devices are constantly receiving information from other devices through serial data communication network. The invalid data code will be set when a receiving device detects a discrepancy in the information it receives from another device causing its integrity to be questioned. The symptom byte listed in the Diagnostic Trouble Code (DTC) Descriptor is for engineering reference only. No external circuit diagnosis is involved. The DTC will set if the Human Machine Interface Control Module is not configured properly.
OBDII Code U2505 - Invalid Data Received From Human Machine Interface Control Module On MOST Bus - AutoCodes.com
U2505 Code - Invalid Data Received From Human Machine Interface Control Module On MOST Bus

What are the Possible Causes of the DTC U2505?

  • Reprogram Human Machine Interface Control Module
  • Faulty Human Machine Interface Control Module
  • Human Machine Interface Control Module harness is open or shorted
  • Human Machine Interface Control Module circuit poor electrical connection

How to Fix the DTC U2505?

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 U2505 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 U2505 code?

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Need Help with the Code?

Get the U2505 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • U2505 Buick β€” Invalid Data Received From Human Machine Interface Control Module On MOST Bus
  • U2505 Cadillac β€” Invalid Data Received From Human Machine Interface Control Module On MOST Bus
  • U2505 Chevrolet β€” Invalid Data Received From Human Machine Interface Control Module On MOST Bus
  • U2505 GMC β€” Invalid Data Received From Human Machine Interface Control Module On MOST Bus
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 U2505 Code

1. What are the common symptoms of OBDII code U2505?

- Common symptoms include issues with the vehicle's infotainment system, loss of communication with the human machine interface (HMI) control module, and possible warning lights on the dashboard.

2. What could cause the OBDII code U2505 to appear?

- The code U2505 typically indicates invalid data received from the human machine interface control module on the MOST bus, which could be caused by wiring issues, a faulty HMI module, or problems with the MOST bus communication network.

3. How can I diagnose the OBDII code U2505?

- Diagnosing the code U2505 involves performing a thorough inspection of the wiring harness, checking the connections to the HMI control module, and using a diagnostic tool to analyze the communication on the MOST bus.

4. Is it safe to continue driving with OBDII code U2505 present?

- It is generally not recommended to continue driving with the U2505 code active, as it can lead to further communication issues within the vehicle's systems and potentially affect overall performance.

5. Can I repair OBDII code U2505 myself?

- Repairing the U2505 code may require advanced diagnostic tools and knowledge of automotive electrical systems, so it is recommended to seek assistance from a qualified mechanic or technician.

6. How much does it cost to fix OBDII code U2505?

- The cost of fixing the U2505 code can vary depending on the underlying cause of the issue. Repair costs may include labor fees, replacement parts, and diagnostic services.

7. Are there any temporary fixes for OBDII code U2505?

- Temporary fixes for the U2505 code may include checking and reseating the connections to the HMI control module, but it is important to address the root cause of the issue for a permanent solution.

8. Can a low battery voltage trigger OBDII code U2505?

- Yes, low battery voltage or electrical issues in the vehicle can sometimes lead to communication errors and trigger the U2505 code. It is advisable to ensure the battery and charging system are in good condition.

9. Will resetting the OBDII codes clear U2505?

- Resetting the OBDII codes may temporarily clear the U2505 code, but if the underlying issue is not resolved, the code is likely to reappear after driving the vehicle.

10. How long does it take to fix OBDII code U2505?

- The time required to fix the U2505 code depends on the complexity of the issue and the availability of parts. Repairs could range from a few hours to a full day, depending on the specific circumstances.

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