Engine-CodesHyundai – P0736 Hyundai

P0736 Hyundai Code - Reverse gear incorrect ratio

Quick Answer

The P0736 diagnostic trouble code (DTC) for Hyundai vehicles indicates a problem with the reverse gear incorrect ratio. Common causes include Low transmission fluid levels, Faulty transmission solenoid, Worn or damaged transmission gears. 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
P0736 Hyundai indicates Reverse gear incorrect ratio.
Common causes
Common causes include Low transmission fluid levels, Faulty transmission solenoid, Worn or damaged transmission gears.
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 12, 2024
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Code P0736 Hyundai Description

The P0736 diagnostic trouble code (DTC) for Hyundai vehicles indicates a problem with the reverse gear incorrect ratio. This means that the transmission is not shifting into reverse properly, which can lead to various issues with the vehicle's performance and drivability.

OBDII Code P0736 Hyundai - Reverse gear incorrect ratio
P0736 Hyundai Code - Reverse gear incorrect ratio

Common Causes of P0736 Hyundai

  1. Low transmission fluid levels
  2. Faulty transmission solenoid
  3. Worn or damaged transmission gears
  4. Electrical issues with the transmission control module
  5. Malfunctioning transmission speed sensor

Symptoms of P0736 Hyundai

  1. Difficulty shifting into reverse gear
  2. Delayed engagement when shifting into reverse
  3. Slipping or jerking movements when in reverse
  4. Loud clunking noises when shifting into reverse
  5. Check Engine Light illuminated on the dashboard

How to Fix P0736 Hyundai

  1. Begin by checking the transmission fluid level and condition. If low, top up the fluid to the appropriate level and inspect for any leaks.
  2. Perform a thorough diagnostic scan to identify the specific cause of the incorrect ratio issue. This may involve checking transmission codes and conducting a road test to observe the symptoms.
  3. Depending on the diagnosis, repair or replace any faulty components such as the transmission solenoid, speed sensor, or damaged gears.
  4. Clear the DTC from the vehicle's computer system and test the vehicle to ensure the issue has been resolved.
  5. If necessary, perform a transmission relearn procedure to recalibrate the system and ensure proper gear shifting.

Cost to Fix P0736 Hyundai

The cost of repairing a P0736 code on a Hyundai vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, you can expect to pay anywhere from $200 to $800 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's best to consult with a professional to get an accurate estimate for your specific situation.

Tech Notes for P0736 Hyundai

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

When is the Code Detected?

P0736 is detected when A/T cannot be shifted to the reverse gear position even if electrical circuit is good.

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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 P0736 Hyundai Code

1. What does the OBDII code P0736 mean on a Hyundai?

P0736 indicates an incorrect gear ratio in reverse, meaning the transmission is unable to properly engage or maintain the correct ratio for reverse gear.

2. What are the common symptoms of code P0736 on a Hyundai?

Symptoms may include difficulty shifting into reverse, no reverse gear functionality, transmission slipping, or abnormal noises when attempting to engage reverse.

3. What causes the P0736 code to appear on a Hyundai?

Common causes include low transmission fluid, damaged reverse gear components, a malfunctioning transmission control module (TCM), or issues with sensors like the input or output shaft speed sensor.

4. Can low transmission fluid cause code P0736 on a Hyundai?

Yes, insufficient or degraded transmission fluid can lead to improper gear operation and trigger the P0736 code.

5. How is code P0736 diagnosed on a Hyundai?

A mechanic will typically check for related codes, inspect transmission fluid levels and quality, and test the speed sensors and internal transmission components.

6. Can driving with code P0736 cause further damage to my Hyundai?

Yes, continuing to drive with this code may lead to further transmission damage and more expensive repairs.

7. How can code P0736 be fixed on a Hyundai?

Repairs may include refilling or replacing the transmission fluid, replacing faulty speed sensors, repairing or rebuilding the transmission, or reprogramming the TCM.

8. Is it expensive to fix code P0736 on a Hyundai?

The cost varies depending on the cause; simple fixes like fluid replacement are cheaper, while transmission repairs or replacements can be costly.

9. Can a faulty speed sensor cause code P0736 on a Hyundai?

Yes, a malfunctioning input or output shaft speed sensor can result in incorrect gear ratio readings and trigger this code.

10. Will clearing the code P0736 fix the issue on a Hyundai?

Clearing the code without addressing the underlying issue will only temporarily remove the warning, and the problem will likely reoccur.

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