AutoCodes – Generic – C1734

C1734 Code - Rear Leveling Valve Solenoid Circuit

Quick Answer

The Control Valve Assembly consist of each front and rear leveling valve and gate valve and performs the height control and connecting and disconnecting the fluid line of the right and left shock absorber by operating the solenoid valve ON and OFF with the control signal from the Electronic Control Unit (ECU). Common causes include Faulty Rear Leveling Valve Solenoid, Rear Leveling Valve Solenoid harness is open or shorted, Rear Leveling Valve Solenoid circuit poor electrical connection. 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
C1734 indicates Rear Leveling Valve Solenoid Circuit.
Common causes
Common causes include Faulty Rear Leveling Valve Solenoid, Rear Leveling Valve Solenoid harness is open or shorted, Rear Leveling Valve Solenoid circuit poor electrical connection.
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 6,018
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2020
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Code C1734 Description

The Control Valve Assembly consist of each front and rear leveling valve and gate valve and performs the height control and connecting and disconnecting the fluid line of the right and left shock absorber by operating the solenoid valve ON and OFF with the control signal from the Electronic Control Unit (ECU).
OBDII Code C1734 - Rear Leveling Valve Solenoid Circuit - AutoCodes.com
C1734 Code - Rear Leveling Valve Solenoid Circuit

What are the Possible Causes of the DTC C1734?

  • Faulty Rear Leveling Valve Solenoid
  • Rear Leveling Valve Solenoid harness is open or shorted
  • Rear Leveling Valve Solenoid circuit poor electrical connection
  • Faulty Suspension Electronic Control Unit (ECU)

How to Fix the DTC C1734?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1734 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 C1734 code?

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Need Help with the Code?

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Information for Specific Makes

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 C1734 Code

1. What are common symptoms of OBDII code C1734 (Rear Leveling Valve Solenoid Circuit)?

- Common symptoms include issues with the rear suspension system, uneven ride height, and problems with the vehicle's stability.

2. What could cause OBDII code C1734 to be triggered?

- The code C1734 may be triggered due to a faulty rear leveling valve solenoid, wiring issues, or problems with the suspension system.

3. How can I diagnose the cause of OBDII code C1734?

- Diagnosing the cause of code C1734 involves inspecting the rear leveling valve solenoid, checking the wiring for any damage, and testing the suspension components for proper functioning.

4. Is it safe to continue driving with OBDII code C1734 present?

- It is not recommended to continue driving with code C1734 present, as it can lead to further suspension issues and potentially compromise the vehicle's safety and performance.

5. Can I repair OBDII code C1734 on my own?

- Repairing OBDII code C1734 may require technical expertise and specialized tools. It is recommended to consult a professional mechanic for proper diagnosis and repair.

6. How much does it typically cost to fix OBDII code C1734?

- The cost of fixing OBDII code C1734 can vary depending on the underlying issue. It is advisable to get a diagnostic assessment from a mechanic to determine the exact cost.

7. Are there any temporary fixes for OBDII code C1734?

- Temporary fixes for code C1734 are not recommended, as they may not address the root cause of the issue and could lead to further damage to the vehicle.

8. Can a faulty rear leveling valve solenoid cause other problems in the vehicle?

- Yes, a faulty rear leveling valve solenoid can cause issues with the vehicle's suspension system, ride comfort, and overall stability.

9. How long does it take to repair OBDII code C1734?

- The repair time for OBDII code C1734 can vary depending on the extent of the issue and the availability of parts. It is best to consult a mechanic for an estimate.

10. Will resetting the OBDII system clear code C1734?

- Resetting the OBDII system may temporarily clear the code C1734, but if the underlying issue is not addressed, the code is likely to reappear.

Discuss the causes and fixes for C1734 OBDII Code

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