AutoCodes – Chevrolet – P0735 Chevrolet

P0735 Chevrolet Code - Transmission 5th Gear Ratio Incorrect

Quick Answer

The transmission turbine speed sensor and vehicle speed sensor are hall-effect sensors. Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor. 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 Chevrolet indicates Transmission 5th Gear Ratio Incorrect.
Common causes: Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor.
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 1,172

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0735 Chevrolet Description

The transmission turbine speed sensor and vehicle speed sensor are hall-effect sensors. The turbine speed sensor is mounted to the transmission housing and faces the reluctor attached to the 1-2-3-4-5-6 clutch piston housing. The vehicle speed sensor is mounted to the low and reverse clutch housing on 2WD, or transfer case rear case half on 4WD. The vehicle speed sensor faces a reluctor wheel attached to the transmission output shaft on 2WD, or a reluctor wheel attached to the transfer case rear output shaft on 4WD.
The TCM provides a 9 V reference circuit and a signal circuit to each of the sensors. As the 1-2-3-4-5-6 clutch piston housing and transmission output shaft or transfer case output rotates, the sensors produce a signal frequency based on the teeth on the reluctor wheel. The TCM calculates the transmission gear ratio based on the speed sensor signals and compares the calculated gear ratio to the commanded gear ratio.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects the calculated gear ratio with 5th gear commanded differs from the known 6th gear ratio for 2 s.

OBDII Code P0735 Chevrolet - Transmission 5th Gear Ratio Incorrect - AutoCodes.com — P0735 Chevrolet Code - Transmission 5th Gear Ratio Incorrect

What does this mean?

What are the Possible Causes of the DTC P0735 Chevrolet?

Low transmission fluid level
Shift solenoid mechanical fault
Faulty Turbine Sensor
Faulty Output Speed Sensor

How to Fix the DTC P0735 Chevrolet?

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 does this mean?

Code Tech Notes

Incorrect ratio Diagnostic Trouble Code (DTC) may indicate a component condition with piston seals, clutch plates, or solenoids or it may be caused by a faulty turbine or output speed sensor signal.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0735 Chevrolet 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 Chevrolet code?

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Need Help with the Code?

Get the P0735 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0735 2014 Chevrolet Silverado — Transmission 5th Gear Ratio Incorrect
P0735 2015 Chevrolet Silverado — Transmission 5th Gear Ratio Incorrect
P0735 2016 Chevrolet Silverado — Transmission 5th Gear Ratio Incorrect
P0735 2017 Chevrolet Silverado — Transmission 5th Gear Ratio Incorrect
P0735 2018 Chevrolet Silverado — Transmission 5th Gear Ratio Incorrect

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 Chevrolet Code

1. What are the common symptoms of OBDII code P0735 in a Chevrolet related to the transmission 5th gear ratio incorrect?

- Common symptoms include harsh shifting between gears, slippage in higher gears, illuminated Check Engine Light, and decreased fuel efficiency.

2. What can cause the OBDII code P0735 in a Chevrolet indicating a transmission 5th gear ratio incorrect?

- Possible causes include a faulty transmission control module, damaged or worn out gear components, low transmission fluid level, or a faulty shift solenoid.

3. How serious is the OBDII code P0735 in a Chevrolet indicating a transmission 5th gear ratio incorrect?

- Ignoring this code can lead to further damage to the transmission system, potentially resulting in total transmission failure if left unaddressed for an extended period.

4. How can I diagnose the OBDII code P0735 in a Chevrolet related to the transmission 5th gear ratio incorrect?

- Diagnosis typically involves using a professional OBDII scanner to read the error code, checking the transmission fluid level and condition, and inspecting the transmission components for any visible damage.

5. Can I still drive my Chevrolet with the OBDII code P0735 indicating a transmission 5th gear ratio incorrect?

- It is not recommended to drive the vehicle with this code present, as continued driving can cause further damage to the transmission system and potentially lead to costly repairs.

6. What are some possible repair tips for fixing the OBDII code P0735 in a Chevrolet related to the transmission 5th gear ratio incorrect?

- Repair tips may include checking and topping up the transmission fluid, inspecting and replacing damaged gear components, resetting the transmission control module, or seeking professional assistance for a thorough diagnosis and repair.

7. How much does it typically cost to repair the OBDII code P0735 in a Chevrolet indicating a transmission 5th gear ratio incorrect?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It is advisable to get a detailed estimate from a qualified mechanic.

8. Are there any preventive measures I can take to avoid encountering the OBDII code P0735 in a Chevrolet related to the transmission 5th gear ratio incorrect?

- Regular maintenance of the transmission system, including timely fluid changes and inspections, can help prevent issues that may trigger this error code.

9. Can a DIY enthusiast with basic automotive knowledge fix the OBDII code P0735 in a Chevrolet indicating a transmission 5th gear ratio incorrect?

- While some basic checks like inspecting the transmission fluid level can be done by a DIY enthusiast, diagnosing and repairing complex transmission issues like this code may require professional expertise and specialized tools.

10. Will resetting the Check Engine Light resolve the OBDII code P0735 in a Chevrolet indicating a transmission 5th gear ratio incorrect?

- Resetting the Check Engine Light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing the error code. It is crucial to diagnose and address the root cause of the problem to prevent further transmission damage.