Engine-CodesLincoln – C1790 Lincoln

C1790 Lincoln Code - Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure

Quick Answer

The C1790 diagnostic code for Lincoln vehicles indicates a problem with the left rear air spring/shock solenoid output circuit in the air suspension system. Common causes include Wiring harness or connector damage, Faulty air spring/shock solenoid, Corrosion or rust on the circuit components. 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
C1790 Lincoln indicates Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure.
Common causes
Common causes include Wiring harness or connector damage, Faulty air spring/shock solenoid, Corrosion or rust on the circuit components.
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.
Table of contents Created and updated by William Orellana on Aug 30, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code C1790 Lincoln Description

The C1790 diagnostic code for Lincoln vehicles indicates a problem with the left rear air spring/shock solenoid output circuit in the air suspension system. The air suspension system is responsible for providing a smooth and comfortable ride by adjusting the vehicle's ride height and stiffness based on road conditions. When this code is triggered, it means that there is a failure in the circuit that controls the air spring/shock solenoid, which can lead to issues with the vehicle's suspension performance.

OBDII Code C1790 Lincoln - Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure
C1790 Lincoln Code - Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure

Common Causes of C1790 Lincoln

  1. Wiring harness or connector damage
  2. Faulty air spring/shock solenoid
  3. Corrosion or rust on the circuit components
  4. Electrical short in the circuit
  5. Poor connection or loose terminals

Symptoms of C1790 Lincoln

  1. Uneven ride height
  2. Harsh or bumpy ride
  3. Suspension warning light illuminated on the dashboard
  4. Vehicle leans to one side
  5. Difficulty controlling the vehicle while driving

How to Fix C1790 Lincoln

  1. Begin by inspecting the wiring harness and connectors for any damage or corrosion.
  2. Test the air spring/shock solenoid to determine if it is functioning properly.
  3. Check for any electrical shorts in the circuit using a multimeter.
  4. Repair or replace any damaged wiring, connectors, or components as necessary.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix C1790 Lincoln

The cost of repairing a C1790 code for the air suspension left rear air spring/shock solenoid output circuit failure can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Typically, the parts required for this repair may range from $100 to $300, while the labor costs can range from $150 to $400. Overall, the total cost for this repair could fall between $250 to $700. It is advisable to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

Need more information about the C1790 Lincoln code?

Need more information on how to fix the C1790 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1790 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 C1790 Lincoln Code

1. What are the common symptoms of OBDII code C1790 in a Lincoln related to the Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Common symptoms include a noticeable sagging of the left rear of the vehicle, uneven ride height, and possible issues with the air suspension system.

2. What are some possible causes for OBDII code C1790 in a Lincoln indicating Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Causes can include a faulty air spring or shock solenoid, damaged wiring or connectors in the circuit, or a malfunctioning air suspension control module.

3. How can I diagnose the issue causing OBDII code C1790 in my Lincoln related to the Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Diagnosing the issue may involve visually inspecting the air spring and solenoid, checking the wiring and connectors for damage, and using a diagnostic scan tool to read the trouble codes.

4. Is it safe to drive my Lincoln with OBDII code C1790 indicating Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- It is not recommended to drive the vehicle with this issue as it can affect the overall stability and performance of the air suspension system.

5. What are some repair tips for fixing OBDII code C1790 in a Lincoln related to the Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Repair tips may include replacing the faulty air spring or shock solenoid, repairing any damaged wiring or connectors, and resetting the air suspension system.

6. Can resetting the air suspension system help clear OBDII code C1790 in a Lincoln indicating Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Resetting the air suspension system may temporarily clear the code, but it is important to address the underlying issue to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code C1790 in a Lincoln related to the Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- The cost of repairing this code can vary depending on the specific issue, but it may involve parts and labor costs for replacing components or repairing the circuit.

8. Are there any preventive maintenance measures I can take to avoid OBDII code C1790 in my Lincoln related to the Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Regularly inspecting the air suspension components, checking for any signs of wear or damage, and addressing any issues promptly can help prevent this code from occurring.

9. Will OBDII code C1790 in a Lincoln indicating Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure affect the overall performance of the vehicle?

- Yes, this code can affect the ride quality, stability, and overall performance of the vehicle, particularly in relation to the air suspension system.

10. Can a DIY enthusiast with automotive knowledge repair OBDII code C1790 in a Lincoln related to the Air Suspension Left Rear Air Spring/Shock Solenoid Output Circuit Failure?

- Depending on the specific issue, a DIY enthusiast with the necessary tools and knowledge may be able to address some aspects of the repair, but complex issues may require professional assistance.

Discuss the causes and fixes for C1790 Lincoln OBDII Code

Code C1790 Lincoln comments

No comments found for this page.