AutoCodes – Lexus – C1451 Lexus

C1451 Lexus Code - Motor Drive Permission Malfunction

Quick Answer

If air bleeding has not been performed, the Skid Control ECU stores Diagnostic Trouble Code (DTC) C1451/72 to prevent the entry of air due to the pump motor operation. Common causes include Brake fluid leaks, Air bleeding not performed. 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: C1451 Lexus indicates Motor Drive Permission Malfunction.
Common causes: Common causes include Brake fluid leaks, Air bleeding not performed.
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 4,344

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 Oct 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1451 Lexus Description

If air bleeding has not been performed, the Skid Control ECU stores Diagnostic Trouble Code (DTC) C1451/72 to prevent the entry of air due to the pump motor operation. DTC C1451/72 is stored when Invalid Mode is selected, the system will not return to normal until air bleeding procedure is performed.

OBDII Code C1451 Lexus - Motor Drive Permission Malfunction - AutoCodes.com — C1451 Lexus Code - Motor Drive Permission Malfunction

What does this mean?

What are the Possible Causes of the DTC C1451 Lexus?

Brake fluid leaks
Air bleeding not performed

How to Fix the DTC C1451 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 C1451 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 C1451 Lexus Code

1. What are the common symptoms of OBDII code C1451 in a Lexus related to Motor Drive Permission Malfunction?

The common symptoms include the check engine light illuminating on the dashboard, decreased engine performance, and potential issues with the vehicle's acceleration.

2. What can cause the OBDII code C1451 related to Motor Drive Permission Malfunction in a Lexus?

Possible causes of this code include a malfunctioning motor driver module, wiring issues, electrical problems, or software glitches within the vehicle's control systems.

3. How serious is the Motor Drive Permission Malfunction indicated by the OBDII code C1451 in a Lexus?

While the vehicle may still be operable with this code present, it is important to address it promptly to prevent potential long-term damage to the vehicle's drive system and ensure optimal performance.

4. Can I continue driving my Lexus if the OBDII code C1451 related to Motor Drive Permission Malfunction appears?

It is generally not recommended to continue driving the vehicle with this code, as it can lead to further damage or safety issues. It is advisable to have the vehicle inspected and repaired as soon as possible.

5. How can I diagnose and repair the OBDII code C1451 in my Lexus indicating Motor Drive Permission Malfunction?

Diagnosing and repairing this code typically requires professional diagnostic tools to pinpoint the exact cause. It is recommended to consult a qualified mechanic or dealership for a thorough inspection and repair.

6. Are there any DIY steps I can take to troubleshoot the OBDII code C1451 in my Lexus?

While basic checks like inspecting wiring connections and fuses can be done at home, diagnosing and repairing the specific issue related to Motor Drive Permission Malfunction usually requires advanced equipment and expertise best handled by professionals.

7. Is resetting the OBDII system a viable solution for clearing the C1451 code in a Lexus?

While resetting the OBDII system may temporarily clear the code, it is not a permanent solution. The underlying issue causing the Motor Drive Permission Malfunction should be identified and fixed to prevent the code from reappearing.

8. Can extreme weather conditions trigger the OBDII code C1451 in a Lexus?

Extreme weather conditions can sometimes exacerbate existing electrical or wiring issues that may lead to the Motor Drive Permission Malfunction indicated by the C1451 code. It is essential to address any underlying problems to prevent further issues.

9. How much does it typically cost to repair the OBDII code C1451 in a Lexus related to Motor Drive Permission Malfunction?

The cost of repairing this code can vary depending on the exact cause of the issue, parts needed, and labor costs. It is advisable to obtain quotes from trusted repair shops or dealerships for an accurate estimate.

10. Is it safe to drive my Lexus to the repair shop with the OBDII code C1451 indicating Motor Drive Permission Malfunction?

If the vehicle is still running without noticeable issues, it may be safe to drive to the repair shop. However, if there are significant performance issues or safety concerns, it is best to have the vehicle towed to avoid further damage.