Engine-CodesHonda – P1734 Honda

P1734 Honda Code - Problem In Shift Control System

Quick Answer

The P1734 Honda code indicates a problem in the shift control system of the vehicle. Common causes include Faulty transmission solenoids, Wiring issues in the shift control system, Malfunctioning transmission sensors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1734 Honda indicates Problem In Shift Control System.
Common causes
Common causes include Faulty transmission solenoids, Wiring issues in the shift control system, Malfunctioning transmission sensors.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 07, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1734 Honda Description

The P1734 Honda code indicates a problem in the shift control system of the vehicle. This code is specific to Honda vehicles and typically points to issues with the automatic transmission. The shift control system is responsible for managing the timing and smoothness of gear shifts in an automatic transmission. When this system malfunctions, it can lead to various issues that affect the vehicle's performance and drivability.

OBDII Code P1734 Honda - Problem In Shift Control System
P1734 Honda Code - Problem In Shift Control System

Common Causes of P1734 Honda

  1. Faulty transmission solenoids
  2. Wiring issues in the shift control system
  3. Malfunctioning transmission sensors
  4. Internal mechanical failures in the transmission
  5. Low transmission fluid level or dirty/contaminated fluid

Symptoms of P1734 Honda

  1. Delayed or rough shifting
  2. Transmission slipping
  3. Harsh shifting between gears
  4. Transmission fails to engage
  5. Illumination of the check engine light

How to Fix P1734 Honda

  1. Retrieve and analyze the fault codes using a diagnostic scanner to confirm the presence of the P1734 code.
  2. Inspect the transmission solenoids, wiring, and sensors for any visible damage or issues. Replace any faulty components.
  3. Perform a transmission fluid flush and filter replacement to ensure proper lubrication and functioning of the transmission.
  4. Test drive the vehicle to confirm that the shift control system is operating correctly and that the code does not return.
  5. Clear the fault codes and reset the transmission control module to complete the repair process.

Cost to Fix P1734 Honda

The typical repair costs for addressing the P1734 Honda code can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the repair for this code can range from $200 to $800, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it is recommended to consult local auto repair shops.

Need more information about the P1734 Honda code?

Need more information on how to fix the P1734 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1734 Honda code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1734 Honda Code

No Frequently Asked Questions about P1734 Honda Code found.

Discuss the causes and fixes for P1734 Honda OBDII Code

  • tengo un honda accord 2004 el tipo de transmision es la BCLA, la falla que presenta es que en operacion normal del auto de repente se bloquea en segunda velocidad, ya se le hizo mantenimiento a la transmision, se cambio el kit master y la falla persiste....los codigas que presenta es el P0780 y el P1734

  • Que tal Arturo, presento la misma falla en un Accord BCLA 2003, lograste corregir?