AutoCodesJeep – P0734 Jeep

P0734 Jeep Code - Gear Ratio Error In Fourth Gear

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 (4th) 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
P0734 Jeep indicates Gear Ratio Error In Fourth Gear.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 30,134
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0734 Jeep Description

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 (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
OBDII Code P0734 Jeep - Gear Ratio Error In Fourth Gear - AutoCodes.com
P0734 Jeep Code - Gear Ratio Error In Fourth Gear

What are the Possible Causes of the DTC P0734 Jeep?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Shift solenoids
  • Transmission mechanical problems
  • Transmission hydraulic control circuit

How to Fix the DTC P0734 Jeep?

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 P0734 Jeep 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 P0734 Jeep 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 P0734 Jeep Code

1. What does the OBDII code P0734 for a Jeep indicate?

- The code P0734 indicates a gear ratio error in the vehicle's transmission fourth gear.

2. What are common symptoms of a P0734 error in a Jeep?

- Common symptoms include harsh shifting, slipping gears, decreased fuel efficiency, and illuminated Check Engine Light.

3. What are possible causes of the P0734 code in a Jeep?

- Potential causes include low transmission fluid levels, a faulty transmission solenoid, a damaged torque converter, or issues with the transmission control module.

4. How can I diagnose a P0734 error in my Jeep?

- Diagnosing a P0734 code typically involves conducting a thorough inspection of the transmission fluid level and condition, as well as performing a scan with an OBDII scanner to gather additional data.

5. Can I continue driving my Jeep with a P0734 code?

- It is not recommended to continue driving with a P0734 code as it can lead to further damage to the transmission and potentially result in costly repairs.

6. How can I repair a P0734 error in my Jeep?

- Repair options may include topping up or changing the transmission fluid, replacing faulty transmission components, such as solenoids or sensors, or seeking professional help for a comprehensive transmission inspection.

7. Are there any DIY tips to address a P0734 code in a Jeep?

- DIY tips may include checking and topping up transmission fluid levels, inspecting for any visible leaks, and ensuring the transmission is not overheating during operation.

8. Is it necessary to reset the OBDII system after repairing a P0734 code in a Jeep?

- Yes, resetting the OBDII system after performing repairs for a P0734 code is important to clear the error code and ensure the transmission is functioning properly.

9. How much can I expect to pay to fix a P0734 error in a Jeep?

- Repair costs for a P0734 code can vary depending on the specific issue, but they may range from a few hundred to over a thousand dollars, especially if major transmission components need to be replaced.

10. Can a P0734 error in a Jeep be prevented?

- Regular maintenance, such as checking transmission fluid levels and quality, timely addressing any transmission issues, and driving gently to avoid excessive strain on the transmission, can help prevent a P0734 error in a Jeep.

1. What does the OBDII code P0734 in a Jeep mean?

The OBDII code P0734 in a Jeep indicates a gear ratio error in fourth gear.

2. What are the common symptoms of OBDII code P0734 in a Jeep?

Common symptoms of OBDII code P0734 in a Jeep include harsh shifting, slipping transmission, reduced fuel efficiency, and the transmission staying in one gear.

3. What are the possible causes of OBDII code P0734 in a Jeep?

Possible causes of OBDII code P0734 in a Jeep include low transmission fluid, faulty transmission solenoids, worn clutch components, or issues with the transmission control module.

4. How can I diagnose the OBDII code P0734 in my Jeep?

Diagnosing the OBDII code P0734 in your Jeep typically involves checking the transmission fluid level and condition, performing a thorough inspection of the transmission components, and using a scan tool to retrieve additional transmission error codes.

5. Can I continue driving my Jeep with OBDII code P0734?

It is not recommended to continue driving your Jeep with OBDII code P0734, as it can lead to further damage to the transmission and potentially leave you stranded on the road.

6. How can I repair OBDII code P0734 in my Jeep?

Repairing OBDII code P0734 in your Jeep may involve topping up or replacing the transmission fluid, inspecting and replacing faulty solenoids or clutch components, or resetting the transmission control module.

7. Will resetting the check engine light resolve OBDII code P0734 in my Jeep?

Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing OBDII code P0734 in your Jeep.

8. Is OBDII code P0734 a common problem in Jeep vehicles?

OBDII code P0734, indicating a gear ratio error in fourth gear, can be a common issue in Jeep vehicles, especially in older models or those with high mileage.

9. How much does it typically cost to repair OBDII code P0734 in a Jeep?

The cost to repair OBDII code P0734 in a Jeep can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can I prevent OBDII code P0734 from occurring in my Jeep?

Regular maintenance of your Jeep's transmission, including checking and changing the transmission fluid as recommended, can help prevent issues like OBDII code P0734 from occurring.

Discuss the causes and fixes for P0734 Jeep OBDII Code

  • mi Grand Cherokee presenta el código P0734, P0733 y P0732, al manejar se siente un funcionamiento irregular de la transmision automatica, tarda en acoplar en la posición Drive y cuando se acelera el vehiculo no tiene la fuerza que debería tener, en cambio en la posición 2 el manejo es mas regular

  • Como esta el nivel del aciete de la transmision? hace cuanto tiempo se lo cambio?

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