AutoCodes – Infiniti – U1000 2005 Infiniti G35

U1000 2005 Infiniti G35 Code - CAN Communication Line Signal Malfunction

Quick Answer

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Controller Area Network (CAN) communication harness is open or shorted, Faulty Engine Control Module (ECM), Poor harness ground 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: U1000 2005 Infiniti G35 indicates CAN Communication Line Signal Malfunction.
Common causes: Common causes include Controller Area Network (CAN) communication harness is open or shorted, Faulty Engine Control Module (ECM), Poor harness ground 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 Step-by-Step Diagnostic Guide My Repairs

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

Code Popularity 7,902

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 29, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

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

Code U1000 2005 Infiniti G35 Description

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits. Communication is carried out using two dedicated wires, known as CAN high and CAN low, with both lines carrying 2.5V when the CAN bus is in idle mode. During the transmission of data bits, the CAN high line increases to 3.75V while the CAN low drops to 1.25V, creating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when the Engine Control Module (ECM) is not transmitting or receiving CAN communication signals for 2 seconds or more.

OBDII Code U1000 2005 Infiniti G35 - CAN Communication Line Signal Malfunction - AutoCodes.com — U1000 2005 Infiniti G35 Code - CAN Communication Line Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC U1000 2005 Infiniti G35?

Controller Area Network (CAN) communication harness is open or shorted
Faulty Engine Control Module (ECM)
Poor harness ground connection.

How to Fix the DTC U1000 2005 Infiniti G35?

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 does this mean?

Code Tech Notes

There is a factory service bulletin for the 2005 Infiniti G35:
2005 Infiniti G35 Factory Service Bulletin Code U1000

The service bulletin suggests cleaning engine and body harness ground connection to repair the problem.
- Clean/re-tighten ECM ground connections.
- Clean/re-tighten negative battery cable body connection and battery post connection.
- If needed, clean and ensure good contact between the steering member assembly and the left side instrument stay assembly.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1000 2005 Infiniti G35 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 U1000 2005 Infiniti G35 code?

Need more information on how to fix the U1000 2005 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1000 2005 Infiniti G35 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 U1000 2005 Infiniti G35 Code

1. What does the OBDII code U1000 on a 2005 Infiniti G35 indicate?

The U1000 code in a 2005 Infiniti G35 signals a CAN communication line signal malfunction.

2. What are common symptoms of a CAN communication line signal malfunction in a 2005 Infiniti G35?

Common symptoms may include intermittent or complete loss of communication with various control modules, dashboard warning lights illuminating, and issues with engine performance.

3. What are possible causes of the U1000 code in a 2005 Infiniti G35?

Potential causes may include damaged wiring or connectors in the CAN communication network, faulty control modules, water ingress, or corrosion in the wiring harness.

4. How can I diagnose the U1000 code in a 2005 Infiniti G35?

Diagnosis typically involves inspecting the wiring and connectors for damage, checking for water intrusion, and using a diagnostic scan tool to identify which specific control module is not communicating.

5. Can a DIY enthusiast repair the U1000 code issue in a 2005 Infiniti G35?

Repairing a CAN communication line signal malfunction may require advanced diagnostic skills and specialized tools, so it is recommended to seek assistance from a qualified mechanic or dealership.

6. Is it safe to continue driving a 2005 Infiniti G35 with the U1000 code present?

Continuing to drive with the U1000 code can potentially lead to further communication issues between control modules, affecting the vehicle's performance and safety. It is advisable to address the problem promptly.

7. How much does it typically cost to repair the U1000 code in a 2005 Infiniti G35?

The cost of repair can vary depending on the exact cause of the issue. It is recommended to obtain a diagnostic assessment from a professional to determine the cost accurately.

8. Can resetting the OBDII code U1000 in a 2005 Infiniti G35 fix the issue?

Simply clearing the code without addressing the underlying problem will not resolve the CAN communication line signal malfunction. It is crucial to diagnose and repair the root cause of the issue.

9. Are there any preventive measures to avoid encountering the U1000 code in a 2005 Infiniti G35?

Regular maintenance, such as checking for loose wiring connections and ensuring the vehicle's electrical system is in good condition, can help prevent CAN communication issues that trigger the U1000 code.

10. How long does it take to repair the U1000 code issue in a 2005 Infiniti G35?

The repair time can vary depending on the complexity of the diagnosis and the extent of the issue. It is advisable to consult with a professional technician to get an accurate estimate of the repair duration.