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Engine-Codes – KIA – P0735 KIA

P0735 KIA Code - Fifth Gear Incorrect Ratio

Quick Answer

The P0735 diagnostic trouble code (DTC) for KIA vehicles indicates that the transmission's fifth gear is experiencing an incorrect gear ratio. Common causes include Faulty transmission solenoids, Malfunctioning transmission control module, Low transmission fluid levels. 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
P0735 KIA indicates Fifth Gear Incorrect Ratio.
Common causes
Common causes include Faulty transmission solenoids, Malfunctioning transmission control module, Low transmission fluid levels.
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 10, 2024
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Code P0735 KIA Description

The P0735 diagnostic trouble code (DTC) for KIA vehicles indicates that the transmission's fifth gear is experiencing an incorrect gear ratio. This means that the transmission is not shifting into fifth gear properly, which can lead to a variety of performance issues. The transmission control module (TCM) monitors the gear ratios to ensure smooth shifting and optimal performance. When the TCM detects that the gear ratio in fifth gear is incorrect, it will trigger the P0735 code and illuminate the check engine light on the dashboard.

OBDII Code P0735 KIA - Fifth Gear Incorrect Ratio
P0735 KIA Code - Fifth Gear Incorrect Ratio

Common Causes of P0735 KIA

  1. Faulty transmission solenoids
  2. Malfunctioning transmission control module
  3. Low transmission fluid levels
  4. Internal transmission damage
  5. Issues with the torque converter

Symptoms of P0735 KIA

  1. Harsh shifting between gears
  2. Slipping or jerking when accelerating
  3. Delayed engagement when shifting into fifth gear
  4. Reduced fuel efficiency
  5. Illumination of the check engine light

How to Fix P0735 KIA

  1. Perform a thorough diagnostic scan to confirm the P0735 code and identify any additional related codes.
  2. Inspect the transmission fluid level and condition, topping off or replacing as necessary.
  3. Test the transmission solenoids and replace any faulty ones.
  4. Check the transmission control module for any malfunctions or damage and replace if needed.
  5. Inspect internal transmission components for damage and repair or replace as necessary.

Cost to Fix P0735 KIA

The cost of repairing the P0735 code for a KIA vehicle can vary depending on the specific cause of the issue. In general, parts and labor for this type of repair can range from $200 to $800. However, it is essential to keep in mind that the actual cost can be higher or lower depending on the extent of the damage, the cost of parts, and labor rates in your area. It is recommended to consult with a reputable auto repair shop for a more accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P0735 KIA

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

When is the Code Detected?

P0735 is detected when A/T cannot be shifted to the 5th gear position even if electrical circuit is good.

Need more information about the P0735 KIA code?

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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 P0735 KIA Code

1. What are the common symptoms of OBDII code P0735 (Fifth Gear Incorrect Ratio) in a KIA vehicle?

- Common symptoms include rough shifting, slipping gears, delayed engagement, and illuminated or flashing "Check Engine" light.

2. What are the possible causes of OBDII code P0735 in a KIA vehicle?

- Possible causes include low transmission fluid levels, faulty transmission solenoids, worn clutch components, damaged wiring, or a malfunctioning transmission control module.

3. How can I diagnose the OBDII code P0735 in my KIA vehicle?

- Diagnosis typically involves using a scan tool to retrieve the fault code, checking the transmission fluid level and condition, inspecting for any visible damage to transmission components, and conducting a road test to observe the shifting behavior.

4. Can I continue driving my KIA with OBDII code P0735 present?

- It is not recommended to continue driving with this code as it can lead to further damage to the transmission and potentially unsafe driving conditions. It is best to address the issue promptly.

5. What are some repair tips for fixing OBDII code P0735 in a KIA vehicle?

- Repair tips may include checking and topping up the transmission fluid, replacing faulty solenoids or worn clutch components, repairing damaged wiring, or reprogramming the transmission control module.

6. How much does it typically cost to repair OBDII code P0735 in a KIA vehicle?

- The cost of repair can vary depending on the underlying cause of the code and the specific components that need to be replaced. It is advisable to get a diagnostic from a qualified mechanic to determine the exact cost.

7. Can I reset the OBDII code P0735 in my KIA vehicle myself?

- While you can clear the code using an OBDII scan tool, it is important to address the root cause of the issue to prevent the code from reoccurring. Clearing the code without fixing the underlying problem may lead to more serious transmission issues.

8. Is OBDII code P0735 a common problem in KIA vehicles?

- While it may not be as common as some other OBDII codes, P0735 can still occur in KIA vehicles due to various transmission-related issues. Regular maintenance and timely repairs can help prevent this code from appearing.

9. How long does it take to repair OBDII code P0735 in a KIA vehicle?

- The repair time can vary depending on the specific cause of the code and the extent of the repair needed. Some repairs may be completed within a few hours, while others may require more time for diagnostics and parts replacement.

10. Can a DIY enthusiast fix OBDII code P0735 in a KIA vehicle?

- While some aspects of the repair may be possible for DIY enthusiasts with the right tools and knowledge, diagnosing and fixing transmission-related issues can be complex. It is recommended to seek professional help to ensure the problem is properly addressed.

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