AutoCodes – Generic – C1771

C1771 Code - Air Suspension Vent Solenoid Output Circuit Open

Quick Answer

The 4-Wheel Air Suspension (4WAS) Module monitors the Air Suspension Vent Solenoid. Common causes include Faulty Air Suspension Compressor, Air Suspension Compressor harness is open or shorted, Air Suspension Compressor 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: C1771 indicates Air Suspension Vent Solenoid Output Circuit Open.
Common causes: Common causes include Faulty Air Suspension Compressor, Air Suspension Compressor harness is open or shorted, Air Suspension Compressor 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 4,262

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1771 Description

The 4-Wheel Air Suspension (4WAS) Module monitors the Air Suspension Vent Solenoid. The 4WAS Module sets the OBDII code when the Air Suspension Vent Solenoid is not to factory specifications.

OBDII Code C1771 - Air Suspension Vent Solenoid Output Circuit Open - AutoCodes.com — C1771 Code - Air Suspension Vent Solenoid Output Circuit Open

What does this mean?

What are the Possible Causes of the DTC C1771?

Faulty Air Suspension Compressor
Air Suspension Compressor harness is open or shorted
Air Suspension Compressor circuit poor electrical connection
Faulty 4-Wheel Air Suspension (4WAS) Module

How to Fix the DTC C1771?

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 C1771 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 C1771 code?

Need more information on how to fix the C1771 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1771 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1771 Ford — Air Suspension Vent Solenoid Output Circuit Open
C1771 Lincoln — Air Suspension Vent Solenoid Output Circuit Open

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 C1771 Code

1. What are the common symptoms of OBDII code C1771 (Air Suspension Vent Solenoid Output Circuit Open)?

- Common symptoms include a malfunctioning air suspension system, uneven ride height, and possible illumination of the "Check Engine" light.

2. What can cause the OBDII code C1771 to trigger?

- The code C1771 is typically triggered by a fault in the air suspension vent solenoid circuit, often due to a wiring issue, a faulty solenoid, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code C1771?

- Diagnosing the cause of code C1771 involves checking the wiring harness, inspecting the air suspension vent solenoid for any visible damage, and testing the electrical connections for continuity.

4. Can I drive my vehicle with OBDII code C1771 active?

- It is not recommended to drive your vehicle with the OBDII code C1771 active, as it may lead to further damage to the air suspension system and compromise the vehicle's stability and ride comfort.

5. How can I repair OBDII code C1771 (Air Suspension Vent Solenoid Output Circuit Open)?

- Repairing code C1771 involves fixing the underlying issue causing the open circuit, which may include repairing or replacing damaged wiring, replacing the faulty solenoid, or addressing any poor electrical connections.

6. Is it possible to reset OBDII code C1771 without fixing the underlying issue?

- While you can reset the code using an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure the proper functioning of the air suspension system.

7. Are there any DIY tips for troubleshooting code C1771?

- DIY tips for troubleshooting code C1771 include visually inspecting the wiring harness and connectors, checking for loose connections, and using a multimeter to test the solenoid for continuity.

8. How much does it typically cost to repair OBDII code C1771?

- The cost of repairing code C1771 can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor, excluding any diagnostic fees.

9. Can a faulty air suspension vent solenoid cause other issues besides triggering code C1771?

- Yes, a faulty air suspension vent solenoid can cause other issues such as unstable ride quality, difficulty maintaining proper ride height, and potential damage to other components in the air suspension system.

10. How important is it to address OBDII code C1771 promptly?

- It is important to address OBDII code C1771 promptly to prevent further damage to the air suspension system, maintain vehicle safety and performance, and avoid potential costly repairs in the future.