AutoCodes – Lexus – C1791 Lexus

C1791 Lexus Code - Absorber Control Switch Circuit

Quick Answer

This circuit is used for sending the signal to the Suspension Control ECU to switch to the damping mode selected by the damping force control switch. Common causes include Faulty Absorber Control Switch, Absorber Control Switch harness is open or shorted, Absorber Control Switch 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: C1791 Lexus indicates Absorber Control Switch Circuit.
Common causes: Common causes include Faulty Absorber Control Switch, Absorber Control Switch harness is open or shorted, Absorber Control Switch 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 3,435

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 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1791 Lexus Description

This circuit is used for sending the signal to the Suspension Control ECU to switch to the damping mode selected by the damping force control switch.

OBDII Code C1791 Lexus - Absorber Control Switch Circuit - AutoCodes.com — C1791 Lexus Code - Absorber Control Switch Circuit

What does this mean?

What are the Possible Causes of the DTC C1791 Lexus?

Faulty Absorber Control Switch
Absorber Control Switch harness is open or shorted
Absorber Control Switch circuit poor electrical connection
Faulty Suspension Control ECU

How to Fix the DTC C1791 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 C1791 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 C1791 Lexus Code

1. What are common symptoms of OBDII code C1791 in a Lexus related to the Absorber Control Switch Circuit?

- Common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential traction control issues.

2. What are possible causes of OBDII code C1791 in a Lexus related to the Absorber Control Switch Circuit?

- Possible causes include a faulty ABS control module, damaged wiring or connectors in the ABS system, or a malfunctioning absorber control switch.

3. How can I diagnose OBDII code C1791 in a Lexus related to the Absorber Control Switch Circuit?

- Diagnose the code by using an OBDII scanner to retrieve the specific fault code, inspecting the ABS control module and related components for damage, and testing the absorber control switch for proper functionality.

4. Can I still drive my Lexus with OBDII code C1791 related to the Absorber Control Switch Circuit?

- It is not recommended to drive the vehicle with this code present, as it can affect the ABS system's performance and compromise safety while braking.

5. What are the repair options for fixing OBDII code C1791 related to the Absorber Control Switch Circuit in a Lexus?

- Repair options include replacing the ABS control module, repairing any damaged wiring or connectors, and replacing the absorber control switch if deemed faulty.

6. Is it possible to reset OBDII code C1791 related to the Absorber Control Switch Circuit in a Lexus without fixing the underlying issue?

- While you can clear the fault code with an OBDII scanner, it is essential to address the root cause of the problem to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code C1791 related to the Absorber Control Switch Circuit in a Lexus?

- Repair costs can vary depending on the specific cause of the issue, but expenses may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any preventive maintenance steps to avoid OBDII code C1791 related to the Absorber Control Switch Circuit in a Lexus?

- Regularly inspecting the ABS system components, including wiring and connectors, and addressing any signs of wear or damage promptly can help prevent this code from appearing.

9. Can a DIY enthusiast fix OBDII code C1791 related to the Absorber Control Switch Circuit in a Lexus?

- While some may attempt DIY repairs, diagnosing and fixing ABS system issues can be complex and require specialized tools and knowledge. It is advisable to consult a professional mechanic for proper diagnosis and repair.

10. How long does it typically take to repair OBDII code C1791 related to the Absorber Control Switch Circuit in a Lexus?

- Repair times can vary based on the specific cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to address and fix the problem effectively.