AutoCodes – Lexus – C1337 Lexus

C1337 Lexus Code - Diameter of the Tire is not Uniform

Quick Answer

The Skid Control ECU (Brake Actuator Assembly) measures the speed of each wheel by receiving signals from the speed sensors. Common causes include Tire size or tire pressure of the front or rear tires different, Faulty Speed sensor circuit, Faulty Front speed sensor. 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: C1337 Lexus indicates Diameter of the Tire is not Uniform.
Common causes: Common causes include Tire size or tire pressure of the front or rear tires different, Faulty Speed sensor circuit, Faulty Front speed sensor.
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 4,388

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 Jan 22, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1337 Lexus Description

The Skid Control ECU (Brake Actuator Assembly) measures the speed of each wheel by receiving signals from the speed sensors. These signals are used for recognizing that all 4 wheels are operating properly. Therefore, all wheel signals must indicate the same speed. The Diagnostic Trouble Code (DTC) will be set when the average speed difference between the front wheel and rear wheel is 4% or more at a vehicle speed of 30 km/h (18.6 mph) or more.

OBDII Code C1337 Lexus - Diameter of the Tire is not Uniform - AutoCodes.com — C1337 Lexus Code - Diameter of the Tire is not Uniform

What does this mean?

What are the Possible Causes of the DTC C1337 Lexus?

Tire size or tire pressure of the front or rear tires different
Faulty Speed sensor circuit
Faulty Front speed sensor
Faulty Rear speed sensor
Faulty Front speed sensor rotor (Front axle hub sub-assembly)
Faulty Rear speed sensor rotor (Rear axle hub and bearing assembly)
Faulty Skid Control ECU (Brake Actuator Assembly)
Faulty Four-Wheel Drive (4WD) ECU Assembly

How to Fix the DTC C1337 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 C1337 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.

Need more information about the C1337 Lexus code?

Need more information on how to fix the C1337 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1337 Lexus 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 C1337 Lexus Code

1. What are the common symptoms of OBDII code C1337 in a Lexus related to the diameter of the tire not being uniform?

If this code is triggered, you may experience issues with the vehicle's stability control system and notice uneven tire wear.

2. What are the potential causes of the OBDII code C1337 in a Lexus?

The most common cause of this code is a discrepancy in tire sizes or inflation levels among the tires on the vehicle.

3. How can I diagnose the diameter of the tire not being uniform issue related to the OBDII code C1337 in a Lexus?

You can start by checking each tire's size and inflation pressure to ensure they are all uniform and within the manufacturer's recommended specifications.

4. Can driving with the OBDII code C1337 in a Lexus be dangerous?

Driving with this code may compromise the vehicle's stability control system, leading to decreased traction and potentially unsafe driving conditions.

5. What are some repair tips for resolving the OBDII code C1337 in a Lexus?

Ensuring that all tires are the same size and properly inflated is crucial. Additionally, a professional diagnostic scan and potential recalibration of the stability control system may be necessary.

6. Will resetting the OBDII code C1337 in a Lexus resolve the issue permanently?

Simply clearing the code without addressing the underlying cause, such as tire size discrepancies, will not permanently resolve the problem.

7. Can I fix the OBDII code C1337 issue in a Lexus on my own, or should I seek professional help?

While checking tire sizes and inflation levels can be done at home, diagnosing and repairing the specific cause of the code may require professional assistance.

8. How urgent is it to address the OBDII code C1337 in a Lexus?

It is recommended to address this code promptly to avoid further damage to the stability control system and ensure safe driving conditions.

9. Are there any preventive measures to avoid triggering the OBDII code C1337 in a Lexus?

Regularly checking tire sizes, rotations, and inflation levels can help prevent issues related to the diameter of the tire not being uniform.

10. Can extreme weather conditions contribute to triggering the OBDII code C1337 in a Lexus?

Extreme temperature changes or driving conditions can affect tire inflation levels and potentially lead to triggering this code, emphasizing the importance of regular tire maintenance.