AutoCodes – Toyota – C1744 Toyota

C1744 Toyota Code - Rear Height Control Solenoid Valve Left Circuit Malfunction

Quick Answer

The control valve solenoid assembly consists of each front and rear leveling valve, gate valve and accumulator valve. Common causes include Faulty Rear Height Control Solenoid Valve Left, Rear Height Control Solenoid Valve Left harness is open or shorted, Rear Height Control Solenoid Valve Left 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: C1744 Toyota indicates Rear Height Control Solenoid Valve Left Circuit Malfunction.
Common causes: Common causes include Faulty Rear Height Control Solenoid Valve Left, Rear Height Control Solenoid Valve Left harness is open or shorted, Rear Height Control Solenoid Valve Left 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 2,940

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 C1744 Toyota Description

The control valve solenoid assembly consists of each front and rear leveling valve, gate valve and accumulator valve. It performs the height control and connects and disconnects the fluid line of the right and left shock absorber by operating the solenoid valve with the control signal from the ECU.

OBDII Code C1744 Toyota - Rear Height Control Solenoid Valve Left Circuit Malfunction - AutoCodes.com — C1744 Toyota Code - Rear Height Control Solenoid Valve Left Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC C1744 Toyota?

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

How to Fix the DTC C1744 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 C1744 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.

Need more information about the C1744 Toyota code?

Need more information on how to fix the C1744 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1744 Toyota code diagnosed by a professional: Find a repair shop in your area

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 C1744 Toyota Code

1. What are the common symptoms of OBDII code C1744 in a Toyota?

The common symptoms of OBDII code C1744 include the rear of the vehicle sitting lower than usual, uneven ride height, and potential difficulty in handling and control.

2. What does the OBDII code C1744 Toyota indicate?

OBDII code C1744 indicates a malfunction in the Rear Height Control Solenoid Valve Left circuit of the Toyota's suspension system.

3. What are the possible causes of OBDII code C1744 in a Toyota?

Possible causes of OBDII code C1744 in a Toyota include a faulty rear height control solenoid valve, damaged wiring or connectors in the circuit, or a problem with the vehicle's suspension system.

4. How can I diagnose the issue related to OBDII code C1744 in my Toyota?

Diagnosing the issue related to OBDII code C1744 involves inspecting the rear height control solenoid valve, checking the wiring and connectors for damage, and testing the functionality of the suspension components.

5. Can I continue driving my Toyota with OBDII code C1744?

It is not recommended to continue driving your Toyota with OBDII code C1744, as it can affect the vehicle's handling and stability. It is best to address the issue promptly to prevent further damage.

6. How can I repair OBDII code C1744 in my Toyota?

Repairing OBDII code C1744 in a Toyota may involve replacing the rear height control solenoid valve, repairing or replacing damaged wiring or connectors, and resetting the fault code with an OBDII scanner.

7. Is it possible to reset OBDII code C1744 in a Toyota without fixing the underlying issue?

Resetting OBDII code C1744 without addressing the underlying issue may temporarily clear the fault code, but the problem will likely reoccur until the root cause is fixed.

8. Can weather or road conditions trigger OBDII code C1744 in a Toyota?

Extreme weather conditions or rough road surfaces may exacerbate existing issues related to OBDII code C1744 in a Toyota, but they are not the primary cause of the malfunction.

9. How long does it typically take to repair OBDII code C1744 in a Toyota?

The time required to repair OBDII code C1744 in a Toyota can vary depending on the specific issue, but it may take a few hours to a day for diagnosis and repair by a qualified mechanic.

10. Is it advisable to seek professional help for OBDII code C1744 in a Toyota?

Seeking professional help from a certified mechanic or dealership is recommended for diagnosing and repairing OBDII code C1744 in a Toyota to ensure the issue is properly resolved and prevent further complications.