P0744 Code: Torque Converter Clutch Circuit Intermittent

Most vehicles with automatic transmissions have a torque converter. It connects the engine and transmission to help transfer torque output and efficiency. This mechanism is monitored by your transmission control module (TCM). If your TCM detects any problems, it may trigger various OBD codes, such as code P0744.

Don’t worry if you see a P0744 code when you scan your vehicle. Here’s what you need to know:

What Does the P0744 Code Mean?

Diagnostic Trouble Code (DTC) P0744 stands for “Torque Converter Clutch Circuit Intermittent.” It’s one of the many codes that indicate issues with your torque converter. A P0744 code means that your TCM found a fault in your torque converter clutch or its operating circuit.

Your torque converter may be controlled by your TCM or powertrain control module (PCM) through your torque converter clutch solenoids. These components work together to regulate the hydraulic fluid in your torque converter clutch, which helps activate its coupling mechanism. If your TCM detects torque converter failure or circuit problems, it may trigger a code P0744.

About the Torque Converter Solenoid

Since about 1990, most vehicles engage their torque converter clutches in stages leading up to 100% lockup. That means the solenoid is designed as a “variable force” solenoid that provides varying amounts of pressure to the converter clutch as commanded.

On a 2015 F-150, for example, a P0744 means “Torque Converter Solenoid Circuit Intermittent.”

It’s a simple matter for the ECM/TCM to measure the continuity of any solenoid on the controlled side of that coil. On a solenoid that is hardwired to power, the ECM/TCM looks for 12 volts at the controlled side of the solenoid whenever the solenoid isn’t energized (grounded). On a solenoid that is hard wired to ground, that same strategy works, except that the ECM/TCM is looking for GROUND on the controlled side of the deenergized coil rather than power.

Note: The definition of code P0744 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Possible Causes of the P0744 Code?

Here are the most common causes of a P0744 code:

• Failing torque converter
• Failing torque converter clutch solenoid/s
• Faulty or failing TCM
• Wiring problems

What are the Common Symptoms of the P0744 Code?

A P0744 code may cause various symptoms. Here are the most common signs of a P0744 code:

• Erratic shifting
• Intermittently illuminated check engine light
• Excessive fuel consumption

How to Diagnose the P0744 Code

Efficiently diagnosing trouble codes may require a high level of technical skill. Most of the time, figuring out codes like P0744 may be too technical for a DIYer. If you scan your vehicle and encounter this code, the best way to tackle it is by asking a mechanic for help. However, some online resources may help you get an idea of how to figure out what’s triggering this code. If you want to learn more about code P0744, check out these videos:

How to Fix a Code P0744

Fixing the issues that trigger OBD codes may be too difficult to do from home. Mechanics often need years of training and experience to resolve trouble codes. If you want to fix your vehicle right away, consult a mechanic as soon as you can.

If you’d like to try working on an OBD code, you’ll need to do extensive research. You have to thoroughly check the underlying issues that are triggering the code. After you collect all of the necessary information, you can pinpoint the cause and consult reliable online sources for possible troubleshooting tips.

Take note that some fixes may not apply to all vehicle makes and models. What works for a code P0744 in a Nissan may not work for a Mazda. Always check your owner’s manualto make sure you know how to repair your vehicle. If it becomes too difficult for you to handle, don’t think twice about getting a mechanic to help you out.

Where to Get a New Torque Converter for Your Vehicle

Driving with a P0744 code due to a damaged torque converter is dangerous, as you’ll have limited control over shifting. Dealing with shifting issues can get quite expensive as well, so why not shop for a top-notch torque converter replacement here at CarParts.com?

Use your phone or laptop to visit CarParts.com and enter your ride’s year, make, model, and engine into our vehicle selector to narrow down the selection to compatible torque converters.

We want to give you the best value for your money, so we source our parts from only the most trusted manufacturers in the industry. We also offer them at competitive prices. Our warehouses are also strategically located across different states, so you can expect to receive your order in a matter of days.

Don’t wait until you’re dealing with frustrating transmission issues before replacing your torque converter. Shop now at CarParts.com and get your replacement in no time!