Lexus Acura Error Code P1739: How to Fix It

Q: Can I still drive with P1739 error code?

You should avoid driving except to get to a repair facility. P1739 can cause unpredictable shifting, transmission slipping, or complete loss of certain gears, making driving unsafe.

Q: How much does it cost to fix P1739 error code?

Repair costs range from $150-300 for simple wiring issues, $200-500 for solenoid replacement, to $800-2000 for transmission control module replacement. Internal transmission repairs can cost $2000-4000.

Q: What causes transmission solenoid B circuit failure?

Common causes include contaminated transmission fluid, electrical wiring damage, faulty solenoid valve, transmission control module failure, or internal transmission wear affecting hydraulic pressure.

Q: Will P1739 clear itself after repair?

No, P1739 must be manually cleared using an OBD2 scanner after completing repairs. The code may return if the underlying problem isn't properly fixed.

Q: Is P1739 the same on Lexus and Acura vehicles?

While both use P1739 for transmission solenoid B circuit issues, the specific solenoid location and testing procedures may vary between Lexus and Acura models. Always consult your vehicle's service manual.

Abstract

Error code P1739 indicates a malfunction in the transmission solenoid B circuit in your Lexus or Acura vehicle. This error affects transmission shifting performance and can cause harsh shifts, slipping, or the transmission getting stuck in one gear.