P0735 KIA Code - Fifth Gear Incorrect Ratio
Quick Answer
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter slip ratio = A x C/B A: Output shaft revolution signal from revolution sensor B: Engine speed signal from Engine Control Module (ECM) C: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (5th) supposed by TCM, the slip ratio will be more than normal. Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids. 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 Low transmission fluid level, Dirty transmission fluid, Shift solenoids.
- 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.
Code P0735 KIA Description
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (5th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
What are the Possible Causes of the DTC P0735 KIA?
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
How to Fix the DTC P0735 KIA?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0735 KIA 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 P0735 KIA code?
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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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