AutoCodes – Lexus – C1737 Lexus

C1737 Lexus Code - Right Front Height Control Solenoid 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 Right Front Height Control Solenoid Valve, Right Front Height Control Solenoid Valve harness is open or shorted, Right Front Height Control Solenoid 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: C1737 Lexus indicates Right Front Height Control Solenoid Valve Circuit.
Common causes: Common causes include Faulty Right Front Height Control Solenoid Valve, Right Front Height Control Solenoid Valve harness is open or shorted, Right Front Height Control Solenoid 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 1,799

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 C1737 Lexus 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 C1737 Lexus - Right Front Height Control Solenoid Valve Circuit - AutoCodes.com — C1737 Lexus Code - Right Front Height Control Solenoid Valve Circuit

What does this mean?

What are the Possible Causes of the DTC C1737 Lexus?

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

How to Fix the DTC C1737 Lexus?

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 C1737 Lexus 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 C1737 Lexus Code

1. What does the OBDII code C1737 mean on a Lexus?

C1737 indicates an issue with the right front height control solenoid valve circuit, which is part of the air suspension system responsible for adjusting the vehicle's ride height.

2. What are the common symptoms of the C1737 code?

Symptoms may include uneven ride height, a noticeable tilt in the vehicle, suspension warning lights on the dashboard, or a rougher ride quality.

3. What causes the C1737 code to be triggered?

Common causes include a faulty height control solenoid valve, damaged or corroded wiring, a bad electrical connection, or issues with the suspension control module.

4. Can I still drive my Lexus with the C1737 code?

While the vehicle may still be drivable, ignoring the issue can lead to poor handling, increased tire wear, or further damage to the suspension system.

5. How do I diagnose the C1737 code?

Start by inspecting the wiring and connectors for damage or corrosion, then test the right front height control solenoid valve for proper operation. Use a scan tool to verify the fault and check related systems.

6. How do I fix the C1737 code on my Lexus?

Repairs may involve replacing the right front height control solenoid valve, repairing damaged wiring, cleaning corroded connections, or reprogramming the suspension control module if needed.

7. What tools are required to troubleshoot the C1737 code?

Youâ€™ll need a diagnostic scan tool, a multimeter to test electrical circuits, and possibly a repair manual to locate components and wiring diagrams.

8. How much does it cost to repair the C1737 code?

The cost can vary depending on the exact issue, but replacing the height control solenoid valve may cost $200â€“$500, excluding labor. Wiring repairs or diagnostics could add additional costs.

9. Can a bad air compressor cause the C1737 code?

While a bad air compressor can affect the suspension system, the C1737 code specifically relates to the right front height control solenoid valve circuit and not the compressor itself.

10. How can I prevent the C1737 code from recurring?

Regularly inspect the suspension system, including wiring and connectors, and address any issues like corrosion or wear promptly to prevent further faults.