Nissan Error Code P1740: How to Fix It

Q: Can I drive with Nissan error code P1740?

You can drive short distances to a repair shop, but avoid highway speeds and heavy acceleration. The transmission may not shift properly and could overheat, causing expensive internal damage.

Q: How much does it cost to fix P1740 on a Nissan?

Solenoid replacement typically costs $200-400 for parts and labor. However, if internal transmission damage is present, repairs can range from $1,500-3,000 or require a complete rebuild.

Q: Will P1740 cause transmission failure?

If left unrepaired, P1740 can lead to transmission overheating and internal damage. The lockup solenoid helps improve fuel economy and reduce heat, so its failure puts extra stress on transmission components.

Q: What causes Nissan P1740 error code?

Common causes include a faulty lockup control solenoid, damaged wiring harness, low transmission fluid, contaminated ATF, or internal transmission wear. Electrical issues and solenoid failure are the most frequent culprits.

Q: How do I prevent P1740 from happening again?

Regular transmission service every 30,000-60,000 miles, using only manufacturer-specified ATF, fixing fluid leaks promptly, and avoiding aggressive driving can help prevent solenoid failures and extend transmission life.

Abstract

Nissan error code P1740 indicates a problem with the lockup control solenoid in your transmission. This solenoid controls the torque converter lockup mechanism, and when it fails, you may experience poor fuel economy, rough shifting, or transmission overheating.