AutoCodes – Hyundai – P1759 Hyundai

P1759 Hyundai Code - Control Module Check Sum

Quick Answer

P1759 Hyundai indicates Control Module Check Sum. Common causes include Faulty Control Module, Control Module harness is open or shorted, Control Module 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: P1759 Hyundai indicates Control Module Check Sum.
Common causes: Common causes include Faulty Control Module, Control Module harness is open or shorted, Control Module 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 4,423

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 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1759 Hyundai Description

OBDII Code P1759 Hyundai - Control Module Check Sum - AutoCodes.com — P1759 Hyundai Code - Control Module Check Sum

What does this mean?

What are the Possible Causes of the DTC P1759 Hyundai?

Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC P1759 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 P1759 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.

Need more information about the P1759 Hyundai code?

Need more information on how to fix the P1759 Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1759 Hyundai Code

1. What does the OBDII code P1759 mean for Hyundai vehicles?

P1759 indicates a Control Module Check Sum issue, where the transmission control module (TCM) detects a mismatch in its internal data integrity, signaling a potential software or hardware problem.

2. What are common symptoms of the P1759 code on a Hyundai?

Symptoms may include erratic shifting, transmission stuck in limp mode, reduced fuel efficiency, and the illumination of the check engine light.

3. What causes the P1759 code to appear on a Hyundai?

It can be caused by corrupt software in the transmission control module, electrical issues such as damaged wiring or connectors, or a malfunctioning TCM.

4. Can a weak battery trigger the P1759 code in Hyundai vehicles?

Yes, a weak or failing battery can cause voltage irregularities that might lead to checksum errors in the transmission control module.

5. How can the P1759 code be diagnosed on a Hyundai?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors, and testing the transmission control module for software or hardware errors.

6. Is it safe to drive a Hyundai with the P1759 code?

Driving with this code may lead to transmission issues or limp mode activation, which can limit performance and potentially cause further damage. Repairs should be addressed promptly.

7. How is the P1759 code typically fixed on a Hyundai?

Repairs may include reprogramming or updating the transmission control module, replacing faulty wiring or connectors, or, in severe cases, replacing the TCM.

8. Can the P1759 code clear itself on a Hyundai?

The code may temporarily clear if intermittent issues resolve, but it will likely return if the underlying problem isnâ€™t fixed.

9. Is the P1759 code specific to Hyundai transmissions?

Yes, this code is specific to Hyundai and relates to the integrity of the transmission control module data.

10. How much does it typically cost to fix the P1759 code on a Hyundai?

Repair costs vary widely depending on the issue, ranging from $100 for simple fixes like wiring repairs to over $1,000 for TCM replacement or reprogramming.