AutoCodes – Toyota – C1735 Toyota

C1735 Toyota Code - Height Control Exhaust Valve Circuit

Quick Answer

The Suspension Electronic Control Unit (ECU) energizes the height control solenoid valve, which opens the valve and leads compressed air to the pneumatic cylinder, thus raising the vehicle height. Common causes include Faulty Height Control Exhaust Valve, Height Control Exhaust Valve harness is open or shorted, Height Control Exhaust Valve 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: C1735 Toyota indicates Height Control Exhaust Valve Circuit.
Common causes: Common causes include Faulty Height Control Exhaust Valve, Height Control Exhaust Valve harness is open or shorted, Height Control Exhaust Valve 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 5,084

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 Nov 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1735 Toyota Description

The Suspension Electronic Control Unit (ECU) energizes the height control solenoid valve, which opens the valve and leads compressed air to the pneumatic cylinder, thus raising the vehicle height. When the vehicle height is lowered, the ECU energizes not only the height control solenoid valve but also the exhaust valve which open the valve and discharge the compressed air in the pneumatic cylinder to the atmosphere. Front and rear height control valves have 2 solenoid valves to control right hand and left hand pneumatic cylinders separately. The exhaust valve is located on the compressor unit, and has one valve only.

OBDII Code C1735 Toyota - Height Control Exhaust Valve Circuit - AutoCodes.com — C1735 Toyota Code - Height Control Exhaust Valve Circuit

What does this mean?

What are the Possible Causes of the DTC C1735 Toyota?

Faulty Height Control Exhaust Valve
Height Control Exhaust Valve harness is open or shorted
Height Control Exhaust Valve circuit poor electrical connection
Faulty Suspension Electronic Control Unit (ECU)

How to Fix the DTC C1735 Toyota?

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 C1735 Toyota 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.

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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 C1735 Toyota Code

1. What are the common symptoms of OBDII code C1735 in a Toyota related to the Height Control Exhaust Valve Circuit?

- Common symptoms include issues with the vehicle's height control system, such as improper suspension leveling or height adjustments.

2. What can cause the OBDII code C1735 to trigger in a Toyota?

- The code C1735 can be triggered by faulty height control exhaust valve circuit wiring, a malfunctioning exhaust valve, or a problem with the height control sensor.

3. How can I diagnose the OBDII code C1735 in my Toyota?

- Diagnosis involves inspecting the wiring and connections related to the height control exhaust valve circuit, testing the exhaust valve's functionality, and checking the height control sensor for any issues.

4. Can I continue driving my Toyota with the OBDII code C1735 present?

- It is not recommended to drive the vehicle with the code C1735 active, as it may affect the proper functioning of the height control system and compromise the vehicle's stability.

5. How can I repair the OBDII code C1735 in my Toyota?

- Repair options may include repairing or replacing damaged wiring, fixing or replacing the height control exhaust valve, and addressing any issues with the height control sensor.

6. Are there any DIY tips for troubleshooting the OBDII code C1735 in a Toyota?

- DIY tips may include visually inspecting the wiring for any visible damage, checking the exhaust valve for proper operation, and ensuring the height control sensor is securely connected.

7. Will resetting the OBDII code C1735 in my Toyota resolve the issue?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code to trigger. Proper diagnosis and repair are necessary.

8. Can extreme weather conditions impact the height control exhaust valve circuit in a Toyota?

- Yes, extreme weather conditions such as extreme heat or cold can potentially affect the components of the height control system, leading to issues that trigger the OBDII code C1735.

9. How long does it typically take to repair the OBDII code C1735 in a Toyota?

- The repair time can vary depending on the specific cause of the code, but it may take anywhere from a few hours to a day to diagnose and fix the issue related to the height control exhaust valve circuit.

10. Is it necessary to visit a mechanic for repairing the OBDII code C1735 in a Toyota, or can I fix it myself?

- While some DIY troubleshooting may be possible, it is recommended to consult a qualified mechanic or technician to properly diagnose and repair the OBDII code C1735 in your Toyota to ensure the issue is addressed correctly.