AutoCodes – Lexus – C1645 Lexus

C1645 Lexus Code - Power Steering Control System Failure

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when the Parking Assist ECU receives a malfunction signal from the power steering system via CAN communication. Common causes include Faulty Power Steering System. 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: C1645 Lexus indicates Power Steering Control System Failure.
Common causes: Common causes include Faulty Power Steering System.
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 5,100

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 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1645 Lexus Description

This Diagnostic Trouble Code (DTC) is stored when the Parking Assist ECU receives a malfunction signal from the power steering system via CAN communication.

OBDII Code C1645 Lexus - Power Steering Control System Failure - AutoCodes.com — C1645 Lexus Code - Power Steering Control System Failure

What does this mean?

What are the Possible Causes of the DTC C1645 Lexus?

Faulty Power Steering System

How to Fix the DTC C1645 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 C1645 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 C1645 Lexus Code

1. What are the common symptoms of OBDII code C1645 in a Lexus related to Power Steering Control System Failure?

- Common symptoms include loss of power steering assistance, illuminated power steering warning light on the dashboard, and difficulty steering the vehicle.

2. What are the possible causes of OBDII code C1645 in a Lexus?

- The code C1645 in a Lexus is typically caused by a malfunction in the power steering control system, which can be due to issues with the power steering control module, wiring faults, or a failing power steering motor.

3. How can I diagnose the OBDII code C1645 in my Lexus related to Power Steering Control System Failure?

- Diagnosing OBDII code C1645 involves using an OBDII scanner to retrieve the fault code, checking the power steering system components for any visible damage or loose connections, and performing a thorough inspection of the power steering control module.

4. What are the recommended repair tips for fixing OBDII code C1645 in a Lexus?

- Repairing OBDII code C1645 may involve resetting the power steering system by disconnecting the battery for a few minutes, checking and repairing any damaged wiring, replacing the power steering control module, or fixing any issues with the power steering motor.

5. Can I drive my Lexus with OBDII code C1645 related to Power Steering Control System Failure?

- It is not recommended to drive your Lexus with OBDII code C1645 as it can lead to unsafe driving conditions due to the loss of power steering assistance. It is best to address the issue promptly to ensure safe operation of the vehicle.

6. How much does it typically cost to repair OBDII code C1645 in a Lexus related to Power Steering Control System Failure?

- The cost of repairing OBDII code C1645 in a Lexus can vary depending on the specific cause of the issue. It is recommended to consult with a professional mechanic to get an accurate estimate for the repair.

7. Can OBDII code C1645 in a Lexus be reset without fixing the underlying issue?

- While you can clear the fault code temporarily by resetting the system, it is crucial to address the underlying issue causing OBDII code C1645 to prevent it from reoccurring and ensure the safe operation of the power steering system.

8. Is it possible to prevent OBDII code C1645 in a Lexus related to Power Steering Control System Failure?

- Regular maintenance of the power steering system, such as checking fluid levels and addressing any unusual noises or steering difficulties promptly, can help prevent issues that may trigger OBDII code C1645 in a Lexus.

9. Will OBDII code C1645 in a Lexus cause permanent damage if left unattended?

- Ignoring OBDII code C1645 related to Power Steering Control System Failure can potentially lead to permanent damage to the power steering system components and compromise the safety and drivability of the vehicle. It is advisable to address the issue promptly.

10. How long does it typically take to repair OBDII code C1645 in a Lexus?

- The repair time for OBDII code C1645 in a Lexus can vary depending on the complexity of the issue and the availability of replacement parts. It is recommended to consult with a professional mechanic to get an estimated repair timeline.