Engine-Codes.com
Engine-Codes – Infiniti – P0744 2005 Infiniti G35

P0744 2005 Infiniti G35 Code - Torque Converter Clutch Circuit Intermittent

Quick Answer

The P0744 diagnostic trouble code (DTC) specifically relates to the torque converter clutch circuit in a 2005 Infiniti G35. Common causes include Faulty torque converter clutch solenoid, Wiring issues or shorts in the TCC circuit, Low transmission fluid levels or dirty fluid. 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
P0744 2005 Infiniti G35 indicates Torque Converter Clutch Circuit Intermittent.
Common causes
Common causes include Faulty torque converter clutch solenoid, Wiring issues or shorts in the TCC circuit, Low transmission fluid levels or dirty fluid.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0744 2005 Infiniti G35 Description

The P0744 diagnostic trouble code (DTC) specifically relates to the torque converter clutch circuit in a 2005 Infiniti G35. The torque converter is a critical component in an automatic transmission system that allows the vehicle to smoothly shift gears. The torque converter clutch (TCC) is responsible for locking the torque converter when the vehicle is at cruising speed, improving fuel efficiency and reducing heat buildup in the transmission.

OBDII Code P0744 2005 Infiniti G35 - Torque Converter Clutch Circuit Intermittent
P0744 2005 Infiniti G35 Code - Torque Converter Clutch Circuit Intermittent

Common Causes of P0744 2005 Infiniti G35

  1. Faulty torque converter clutch solenoid
  2. Wiring issues or shorts in the TCC circuit
  3. Low transmission fluid levels or dirty fluid
  4. Mechanical issues with the torque converter
  5. Faulty transmission control module (TCM)

Symptoms of P0744 2005 Infiniti G35

  1. Engine stalling at idle
  2. Slipping or delayed shifting
  3. Decreased fuel efficiency
  4. Illumination of the check engine light
  5. Harsh or erratic shifting

How to Fix P0744 2005 Infiniti G35

  1. Begin by conducting a thorough inspection of the transmission system, including checking the transmission fluid level and condition.
  2. Use a scan tool to diagnose the specific cause of the P0744 code and identify any other related codes that may be present.
  3. Test the torque converter clutch solenoid and TCC circuit for proper operation, replacing any faulty components as needed.
  4. Inspect the wiring harness for any signs of damage or corrosion, repairing or replacing any damaged wires.
  5. If the issue persists, consider performing a transmission fluid flush and filter replacement, as well as inspecting the torque converter for any mechanical issues.

Cost to Fix P0744 2005 Infiniti G35

The typical repair costs for addressing a P0744 code in a 2005 Infiniti G35 can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnostic time and labor rates at auto repair shops can vary significantly, so it's advisable to obtain quotes from multiple shops to ensure you're getting a fair price. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

What does this mean?

Tech Notes for P0744 2005 Infiniti G35

When a transmission solenoid is working intermittently, in most cases, the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it's recommended to change the transmission fluid and, if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure, and that the transmission will need to be rebuilt or replaced.

Need more information about the P0744 2005 Infiniti G35 code?

Need more information on how to fix the P0744 2005 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0744 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 P0744 2005 Infiniti G35 Code

What are the common symptoms of OBDII code P0744 on a 2005 Infiniti G35?

Common symptoms of OBDII code P0744 on a 2005 Infiniti G35 include engine stalling at stops, poor fuel economy, difficulty shifting gears, and a noticeable decrease in acceleration.

What are the possible causes of OBDII code P0744 on a 2005 Infiniti G35?

Possible causes of OBDII code P0744 on a 2005 Infiniti G35 may include a faulty torque converter clutch solenoid, a malfunctioning torque converter clutch circuit, low transmission fluid levels, or a wiring issue.

How can I diagnose the cause of OBDII code P0744 on my 2005 Infiniti G35?

To diagnose the cause of OBDII code P0744 on a 2005 Infiniti G35, you may need to perform a thorough inspection of the torque converter clutch solenoid, check the wiring connections for any damage, and ensure the transmission fluid levels are correct.

Can I continue driving my 2005 Infiniti G35 with OBDII code P0744?

It is not recommended to continue driving your 2005 Infiniti G35 with OBDII code P0744, as it can lead to further damage to the transmission system. It is best to have the issue diagnosed and repaired as soon as possible.

How much does it typically cost to repair OBDII code P0744 on a 2005 Infiniti G35?

The cost to repair OBDII code P0744 on a 2005 Infiniti G35 can vary depending on the exact cause of the issue. On average, the repair may cost anywhere from $300 to $800, including parts and labor.

Is it possible to reset OBDII code P0744 on a 2005 Infiniti G35 without repairing the issue?

While it is possible to reset OBDII code P0744 on a 2005 Infiniti G35 using an OBDII scanner, it is not recommended as the underlying issue causing the code will still persist and may worsen over time.

Can low transmission fluid cause OBDII code P0744 on a 2005 Infiniti G35?

Yes, low transmission fluid levels can potentially cause OBDII code P0744 on a 2005 Infiniti G35. It is important to check and maintain proper transmission fluid levels to prevent such issues.

What should I do if I experience intermittent torque converter clutch issues on my 2005 Infiniti G35?

If you experience intermittent torque converter clutch issues on your 2005 Infiniti G35, it is advisable to have the vehicle inspected by a qualified mechanic to diagnose and address the underlying problem causing the intermittent behavior.

Discuss the causes and fixes for P0744 2005 Infiniti G35 OBDII Code

Submit a New Comment

Code P0744 2005 Infiniti G35 comments

No comments found for this page.