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Code U0265

Symptoms

• Malfunctioning radio or navigation system

• Warning light on the dashboard

• Loss of certain vehicle features

Common Causes

• Faulty Antenna Control Module

• Open or shorted wiring to the Antenna Control Module

• Faulty CAN bus connection

Glossary

CAN bus: A robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other's applications without a host computer.

Antenna Control Module: A component that manages the vehicle's antenna functions, often related to radio and navigation systems.

Related Codes

• U0264

• U0266

Laymans terms

Your car's computer can't talk to a part called the 'Antenna Control Module.' It's like when your phone can't connect to Wi-Fi.

Explanation

The vehicle's control module has lost communication with the Antenna Control Module.

Technical description

OBD-II Code U0265 indicates that the vehicle's control module is not receiving or sending information to the Antenna Control Module (ACM) over the Controller Area Network (CAN) bus. This loss of communication can affect the functionality of systems that rely on the ACM.

Diagnosis steps

• Check for other related codes.

• Inspect the wiring and connectors to the Antenna Control Module.

• Test the CAN bus communication lines for continuity.

Repair procedures

• Repair or replace damaged wiring.

• Replace the Antenna Control Module if faulty.

• Ensure proper connection of the CAN bus.

Tools required

• OBD-II scanner

• Multimeter

• Wiring diagram

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect vehicle wiring for damage.

• Avoid aftermarket modifications that can affect the CAN bus.

• Keep software and firmware updated.

Error code type

Communication Error

User experience recommendations

• Consult a professional mechanic for diagnosis.

• Avoid DIY repairs if unfamiliar with vehicle electronics.

• Ensure your vehicle's software is up to date.

Warranty information

Check with your vehicle manufacturer for warranty coverage on electronic components.

Historical data

U0265 is a relatively uncommon code, often associated with newer vehicles with advanced communication networks.

Urgency level

Moderate – While the vehicle can still operate, some features may not work properly.

Legal and safety notice

Ensure all repairs are performed by a qualified technician to maintain vehicle safety and compliance.

Testing conditions

• Vehicle in park with engine running.

• All electrical systems powered on.

Component location

The Antenna Control Module is typically located in the vehicle's dashboard or roof area.

FAQs

Q: Can I drive with code U0265?
A: Yes, but some features like the radio or navigation may not work properly.

Q: Will this code affect my car's performance?
A: It generally won't affect engine performance, but it can impact certain electronic features.

Last updated: Jan 15, 2026 • Source: internal database
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