AutoCodes – Hyundai – P1745 Hyundai

P1745 Hyundai Code - Transmission Control Module 'K' Line

Quick Answer

P1745 Hyundai indicates Transmission Control Module 'K' Line. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection. 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: P1745 Hyundai indicates Transmission Control Module 'K' Line.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection.
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.

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Code Popularity 5,034

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1745 Hyundai Description

OBDII Code P1745 Hyundai - Transmission Control Module 'K' Line - AutoCodes.com — P1745 Hyundai Code - Transmission Control Module 'K' Line

What does this mean?

What are the Possible Causes of the DTC P1745 Hyundai?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

How to Fix the DTC P1745 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1745 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 P1745 Hyundai Code

1. What are the common symptoms of OBDII code P1745 in a Hyundai related to the Transmission Control Module 'K' Line?

The common symptoms include harsh shifting, transmission slipping, and the transmission going into limp mode.

2. What causes the OBDII code P1745 related to the Transmission Control Module 'K' Line in a Hyundai?

The code P1745 is often triggered by a malfunction in the Transmission Control Module or issues with the 'K' Line communication between the TCM and other control modules.

3. How can I diagnose the OBDII code P1745 in a Hyundai concerning the Transmission Control Module 'K' Line?

To diagnose the code P1745, it is recommended to perform a thorough inspection of the TCM, check the wiring harness for any damage or loose connections, and use a diagnostic scanner to retrieve specific error codes.

4. Can a DIY enthusiast repair OBDII code P1745 on a Hyundai due to the Transmission Control Module 'K' Line issue?

While some basic troubleshooting like checking connections and wiring can be done by a DIY enthusiast, diagnosing and repairing complex TCM or 'K' Line issues may require professional help due to the complexity of modern transmissions.

5. Are there any repair tips for resolving the OBDII code P1745 related to the Transmission Control Module 'K' Line in a Hyundai?

One repair tip is to ensure all electrical connections related to the TCM and 'K' Line are secure and free of corrosion. Additionally, checking for any software updates from Hyundai may help resolve the issue.

6. What are the potential risks of ignoring the OBDII code P1745 concerning the Transmission Control Module 'K' Line in a Hyundai?

Ignoring the code P1745 can lead to further transmission damage, increased fuel consumption, and potentially unsafe driving conditions due to erratic shifting behavior.

7. How long does it typically take to repair OBDII code P1745 in a Hyundai caused by issues with the Transmission Control Module 'K' Line?

The repair time can vary depending on the exact cause of the code P1745, but it may take a few hours to a full day for a professional technician to diagnose and fix the issue.

8. Is it safe to continue driving a Hyundai with the OBDII code P1745 related to the Transmission Control Module 'K' Line?

It is not recommended to continue driving a Hyundai with the code P1745 present, as it can lead to further damage to the transmission and potentially compromise driving safety.

9. Can resetting the OBDII code P1745 related to the Transmission Control Module 'K' Line in a Hyundai solve the issue temporarily?

Resetting the code may temporarily clear the warning light, but if the underlying issue with the TCM or 'K' Line communication persists, the code is likely to reappear.

10. What is the approximate cost to repair OBDII code P1745 in a Hyundai caused by the Transmission Control Module 'K' Line issue?

The cost of repairing the code P1745 can vary depending on the exact cause and the labor rates of the repair shop, but it can range from a few hundred to over a thousand dollars.