P0744 OBD-II Trouble Code: Torque Converter Clutch Circuit Intermittent

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0744 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0744 code

P0744 is a diagnostic trouble code (DTC) for "Torque Converter Clutch Circuit Intermittent". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0744 DIAGNOSTIC Get a fair and transparent estimate upfront

P0744 code definition

If the PCM has stored the P0744 code, it means that there was an intermittent abnormality detected in the torque converter clutch circuit.

What the P0744 code means

If the automatic transmission needs a specific amount torque converter “lock up”, and the actual amount of lock up detected does not coincide with the necessary amount, the system will assume that the torque converter clutch circuit is malfunctioning, and will direct the PCM to store the P0744 code.

What causes the P0744 code?

The P0744 code may be stored if the torque converter clutch solenoid is faulty, or if the torque converter is defective. Other causes may include:

What are the symptoms of the P0744 code?

The symptoms of the P0744 code can vary. There may be no detectable symptoms at all beyond the illumination of the Check Engine Light. However, symptoms could be as dire as the total failure of the torque converter clutch to disengage. Other symptoms may include:

How does a mechanic diagnose the P0744 code?

After an OBD-II scanner detects the P0744 code, a technician should begin with a visual inspection of the transmission fluid levels and condition. One of the most common reasons for this code is debris obstructing the flow of transmission fluid throughout the transmission valve. The mechanic should change dirty transmission fluid, and ensure that the fluid does not have a burnt smell, or lacks the proper pressure.

After the transmission fluid has been thoroughly checked and replaced, the code should be cleared from the PCM, and the system should be retested. If the code returns, the mechanic can continue on to further repairs.

Common mistakes when diagnosing the P0744 code

The most common misdiagnosis when the P0744 code is detected is that of overlooking malfunctions in the torque converter clutch wiring. Many technicians replace lock up solenoids or torque converters in error, without considering the potential wiring issues.

It is also important to clear the P0744 code and retest the system after each repair is attempted. If the initial, simple repairs do not stop the Check Engine Light from reappearing and the code from being re-stored in the PCM, it can be a sign of an intermittent issue that requires an in-depth inspection and servicing.

How serious is the P0744 code?

If the P0744 code is detected by the OBD-II scanner, it represents a very serious issue that should not be put off. Issues within the transmission can quickly lead to total transmission failure, and can cause a vehicle to perform less than optimally. If the P0744 is detected, the issue should be addressed right away.

What repairs can fix the P0744 code?

There are many ways that a technician can address a P0744 code, including:

Need help with a P0744 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

P0744
trouble codes
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0744 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,743

Rating Summary
4,361
185
47
28
122
4,361
185
47
28
122

Oreste

12 years of experience
108 reviews
Oreste
12 years of experience
Nissan Altima - Check Engine Light is on - Hialeah, Florida
Showed up quick, and went straight to inspecting a brake light on the dash issue. He found the issue, fixed it, and showed me exactly what was wrong. Thank you!

Daniel

9 years of experience
58 reviews
Daniel
9 years of experience
Honda Fit - Check Engine Light is on - Chicago, Illinois
Told me everything I needed to know and switch out after the inspection. So, I scheduled another service the next day for all the fixes, or fluid maintenance.

Patrick

31 years of experience
1032 reviews
Patrick
31 years of experience
Hyundai Santa Fe - Check Engine Light is on - Austin, Texas
Even after working on my car, he took the time to explain what he did, the parts, and any next steps. Very knowledgeable!

Joe

12 years of experience
22 reviews
Joe
12 years of experience
Toyota 4Runner - Check Engine Light is on - Sacramento, California
Joe was very thorough in his inspections, and his knowledge & experience was clear in his explanations of what was wrong with my car. I really appreciated his recommendations, and the fact that he worked so efficiently that it cut down on time... I would definitely book with him again.

More related articles

P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance Related Trouble Codes: P2158: Vehicle Speed Sensor B...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed Related Trouble Codes: P2441:...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one cylinder. A P2428 trouble code is also associated...

Related questions

Is there a way to check my computer to see if it's faulty or not?

Your computer is located inside the car and would need to be tested by scanning the computer to see if it is storing fault codes for an internal problem or an indication to some engine sensors that may have been...

Check engine light is on for a O2 Sensor-high voltage

Hello. Usually a high-voltage O2 sensor check engine light code will be caused by a faulty O2 sensor itself. Though at times it can be caused by other issues such as shorted wiring, a leaking vacuum line, or even a...

I get trouble code P2138, but I have cleared it and the car works for a while. Now I am getting trouble code P2127 along with P2138.

Hi there. The pedal position sensor on the gas pedal has lost signal for the switch 'E' and 'D'. The code P2138 means that the computer has discovered a malfunction with the pedal sensor. Check the harness to the...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com