AutoCodes – Generic – C1787

C1787 Code - Absorber Control Switch Circuit

Quick Answer

This circuit is sending the signal to the Suspension Control ECU to switch over to the damping mode select by the damping mode select 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: C1787 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 1,217

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 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1787 Description

This circuit is sending the signal to the Suspension Control ECU to switch over to the damping mode select by the damping mode select switch.

OBDII Code C1787 - Absorber Control Switch Circuit - AutoCodes.com — C1787 Code - Absorber Control Switch Circuit

What does this mean?

What are the Possible Causes of the DTC C1787?

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 C1787?

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 C1787 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 C1787 code?

Need more information on how to fix the C1787 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1787 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1787 Lexus — Absorber Control Switch Circuit
C1787 Toyota — Absorber Control Switch Circuit

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 C1787 Code

1. What are the common symptoms of OBDII code C1787?

The common symptoms of OBDII code C1787 ("Absorber Control Switch Circuit") include the ABS warning light being illuminated on the dashboard and potential issues with the vehicle's stability control system.

2. What could cause OBDII code C1787 to trigger?

The triggering of OBDII code C1787 is often caused by a malfunction in the absorber control switch circuit, which may be due to a faulty switch, damaged wiring, or a problem with the control module.

3. How can I diagnose the issue related to code C1787?

Diagnosing the issue related to code C1787 typically involves performing a thorough inspection of the absorber control switch, checking the wiring for any damage or loose connections, and using a diagnostic scanner to retrieve additional fault codes and data.

4. Are there any DIY repair tips for OBDII code C1787?

For OBDII code C1787, DIY repair tips may include checking and replacing the absorber control switch if faulty, repairing any damaged wiring, and resetting the ABS system by clearing the fault code with a scanner.

5. Can I still drive my vehicle with OBDII code C1787 present?

While it may be possible to drive your vehicle with OBDII code C1787 present, it is not recommended as it could potentially affect the functionality of the ABS system and compromise overall safety. It's best to address the issue promptly.

6. Is OBDII code C1787 a serious problem?

OBDII code C1787 should be taken seriously as it indicates a fault in the absorber control switch circuit, which can impact the operation of the ABS system and stability control. It is important to address this issue to ensure safe driving conditions.

7. How much does it typically cost to repair OBDII code C1787?

The cost to repair OBDII code C1787 can vary depending on the underlying cause of the issue. DIY repairs may cost less, while professional repairs at a dealership or mechanic could range from $100 to $500 or more, depending on parts and labor.

8. Can OBDII code C1787 be intermittent?

Yes, OBDII code C1787 can sometimes be intermittent, meaning the ABS warning light may come on and off sporadically. In such cases, it is still important to diagnose and address the underlying issue to prevent potential safety risks.

9. What are the long-term effects of ignoring OBDII code C1787?

Ignoring OBDII code C1787 can lead to a loss of ABS functionality, compromised stability control, and potentially unsafe driving conditions. It is important to address this issue promptly to avoid further damage and ensure road safety.

10. Does OBDII code C1787 affect vehicle performance?

While OBDII code C1787 may not directly affect the performance of the vehicle's engine, it can impact the ABS and stability control systems, potentially affecting overall vehicle handling and safety. Addressing this code promptly is recommended.