Engine-Codes.com
Engine-Codes – Hyundai – P1723 Hyundai

P1723 Hyundai Code - Automatic Transmission Control Relay Stuck On

Quick Answer

The P1723 diagnostic trouble code for Hyundai vehicles refers to the Automatic Transmission Control Relay being stuck on. Common causes include Faulty transmission control relay, Wiring or connection issues related to the relay, Malfunctioning transmission control module. 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
P1723 Hyundai indicates Automatic Transmission Control Relay Stuck On.
Common causes
Common causes include Faulty transmission control relay, Wiring or connection issues related to the relay, Malfunctioning transmission control module.
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.
What is this?
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 P1723 Hyundai Description

The P1723 diagnostic trouble code for Hyundai vehicles refers to the Automatic Transmission Control Relay being stuck on. This indicates a malfunction in the transmission control system, specifically with the relay that controls the transmission's operation. The transmission control relay is responsible for sending power to various components within the transmission to facilitate smooth shifting and overall performance. When this relay gets stuck in the "on" position, it can lead to a variety of issues that affect the vehicle's drivability and performance.

OBDII Code P1723 Hyundai - Automatic Transmission Control Relay Stuck On
P1723 Hyundai Code - Automatic Transmission Control Relay Stuck On

Common Causes of P1723 Hyundai

  1. Faulty transmission control relay
  2. Wiring or connection issues related to the relay
  3. Malfunctioning transmission control module
  4. Internal transmission issues affecting relay operation
  5. Electrical system problems impacting relay function

Symptoms of P1723 Hyundai

  1. Harsh shifting or slipping transmission
  2. Delayed engagement when shifting gears
  3. Transmission staying in one gear
  4. Decreased fuel efficiency
  5. Limited speed or performance due to failsafe mode activation

How to Fix P1723 Hyundai

  1. Diagnose the specific cause of the Automatic Transmission Control Relay being stuck on using a diagnostic scanner to pinpoint the issue.
  2. Inspect and test the transmission control relay to determine if it is functioning correctly.
  3. Check the wiring and connections related to the relay for any damage or loose connections.
  4. Replace the faulty transmission control relay if it is determined to be the cause of the issue.
  5. Reset the transmission control module and clear the trouble codes to ensure proper operation.

Cost to Fix P1723 Hyundai

The typical repair costs for addressing the P1723 code related to the Automatic Transmission Control Relay being stuck on can vary depending on the specific cause of the issue and the labor rates in your area. In general, replacing the transmission control relay and addressing any wiring or connection problems may cost between $150 to $400, including parts and labor. It is important to consult with a qualified mechanic or repair shop to get an accurate estimate based on your vehicle's make and model, as well as the extent of the repairs needed. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these details when seeking repairs for this issue.

Need more information about the P1723 Hyundai code?

Need more information on how to fix the P1723 Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1723 Hyundai 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 P1723 Hyundai Code

1. What does the OBDII code P1723 mean on a Hyundai?

P1723 indicates that the Automatic Transmission Control Relay is stuck in the "On" position, which can affect the transmission's functionality.

2. What are the common symptoms of a P1723 code in a Hyundai?

Symptoms may include the Check Engine Light being illuminated, erratic shifting, transmission stuck in limp mode, or poor vehicle performance.

3. What causes the P1723 code to appear?

Possible causes include a faulty transmission control relay, damaged wiring or connectors, a malfunctioning transmission control module (TCM), or electrical system issues.

4. Can I drive my Hyundai with a P1723 code?

Driving with a P1723 code is not recommended, as it may lead to further transmission damage or unsafe driving conditions due to shifting issues.

5. How do I diagnose a P1723 code in my Hyundai?

Diagnosis involves checking the transmission control relay, inspecting wiring and connectors for damage, and testing the TCM for faults using a scan tool.

6. How do I fix the P1723 code on a Hyundai?

Repairs may include replacing the faulty transmission control relay, repairing damaged wiring, cleaning connectors, or reprogramming or replacing the TCM if necessary.

7. What tools are needed to troubleshoot a P1723 code?

You’ll need an OBDII scanner, a multimeter for electrical testing, and potentially wiring diagrams for your specific Hyundai model.

8. How much does it cost to repair a P1723 code on a Hyundai?

Repair costs vary but can range from $50 to $150 for a replacement relay, while TCM repairs or replacements may cost $500 or more, depending on labor and parts.

9. Can a dead battery cause the P1723 code?

A weak or dead battery can lead to electrical issues, but it’s unlikely to be the sole cause of a P1723 code. The relay or wiring should still be inspected.

10. Is the P1723 code specific to Hyundai vehicles?

While P1723 is most commonly associated with Hyundai vehicles, its meaning may vary slightly in other manufacturers. Always consult a Hyundai-specific repair guide for accuracy.

Discuss the causes and fixes for P1723 Hyundai OBDII Code

Submit a New Comment