Hyundai Kia Error Code P1746: How to Fix It

Q: Can I drive with P1746 error code?

You can drive short distances at low speeds, but avoid highway driving and heavy acceleration. The lock-up clutch may not engage properly, causing transmission overheating and poor fuel economy. Get it diagnosed and repaired as soon as possible.

Q: What causes P1746 code in Hyundai Kia vehicles?

Common causes include faulty lock-up clutch solenoid valve, damaged wiring harness, low or contaminated transmission fluid, internal transmission wear, or TCM malfunction. Electrical issues and solenoid failure are most frequent.

Q: How much does it cost to fix P1746 error code?

Repair costs range from $150-300 for fluid/filter service and minor electrical repairs, to $400-800 for solenoid replacement, up to $1500-3000 for internal transmission repairs or TCM replacement depending on the root cause.

Q: Will P1746 code clear itself?

No, P1746 will not clear itself. The underlying problem must be diagnosed and repaired. Even if the code disappears temporarily, it will return until the faulty component is fixed or replaced.

Abstract

Error code P1746 indicates a problem with your Hyundai or Kia's Transmission Control Module (TCM) lock-up clutch solenoid valve. This high-severity error affects your transmission's ability to properly engage the torque converter lock-up clutch, potentially causing poor fuel economy, rough shifting, or transmission overheating.