Infiniti Error Code P0744: How to Fix It

Q: What causes P0744 error code in Infiniti vehicles?

P0744 is typically caused by a faulty torque converter clutch solenoid, damaged wiring harness, low or contaminated transmission fluid, or internal transmission wear. The intermittent nature suggests an electrical connection issue or a solenoid that's beginning to fail.

Q: Can I drive my Infiniti with P0744 code?

While you may be able to drive short distances, P0744 can cause transmission damage if ignored. You may experience poor fuel economy, rough shifting, or transmission slipping. It's recommended to address this issue promptly to prevent more expensive transmission repairs.

Q: How much does it cost to fix P0744 in an Infiniti?

Repair costs vary depending on the root cause. If it's just a wiring issue, costs may be $100-300. Solenoid replacement typically runs $300-600 including labor. If internal transmission damage has occurred, costs can range from $1,500-4,000 for major repairs or rebuilding.

Q: Will P0744 cause my Infiniti to fail emissions testing?

Yes, P0744 will typically cause your vehicle to fail emissions testing since it's an active diagnostic trouble code related to transmission control systems. The code must be resolved and the drive cycle completed before passing emissions tests.

Q: How do I prevent P0744 from happening again?

Regular transmission fluid changes according to Infiniti's maintenance schedule, avoiding aggressive driving habits, fixing transmission fluid leaks promptly, and addressing any transmission issues early can help prevent P0744. Regular diagnostic scans can also catch problems before they become severe.

Abstract

The P0744 error code in your Infiniti indicates an intermittent problem with the torque converter clutch solenoid in your transmission. This solenoid controls the engagement and disengagement of the torque converter clutch, and when it malfunctions intermittently, you may experience poor fuel economy, rough shifting, or transmission slipping.