AutoCodes – Generic – C1806

C1806 Code - Air Suspension Vehicle Height Sensor Fix

Quick Answer

The Air Levelizer Control Module monitors the Vehicle Height Sensor. Common causes include Faulty Vehicle Height Sensor, Vehicle Height Sensor harness is open or shorted, Vehicle Height Sensor 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: C1806 indicates Air Suspension Vehicle Height Sensor Fix.
Common causes: Common causes include Faulty Vehicle Height Sensor, Vehicle Height Sensor harness is open or shorted, Vehicle Height Sensor 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 1,801

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 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1806 Description

The Air Levelizer Control Module monitors the Vehicle Height Sensor. The Air Levelizer Control Module sets the OBDII code when the Vehicle Height Sensor is not to factory specifications.

OBDII Code C1806 - Air Suspension Vehicle Height Sensor Fix - AutoCodes.com — C1806 Code - Air Suspension Vehicle Height Sensor Fix

What does this mean?

What are the Possible Causes of the DTC C1806?

Faulty Vehicle Height Sensor
Vehicle Height Sensor harness is open or shorted
Vehicle Height Sensor circuit poor electrical connection
Faulty Air Levelizer Control Module

How to Fix the DTC C1806?

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 C1806 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 C1806 code?

Need more information on how to fix the C1806 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1806 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1806 Infiniti — Air Suspension Vehicle Height Sensor Fix
C1806 Nissan — Air Suspension Vehicle Height Sensor Fix

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 C1806 Code

1. What are common symptoms of OBDII code C1806 related to the air suspension vehicle height sensor?

- Common symptoms include inaccurate ride height readings, uneven suspension, or a warning light on the dashboard indicating a suspension issue.

2. What can cause OBDII code C1806 to trigger in a vehicle's air suspension system?

- The code C1806 may be triggered by a faulty height sensor, damaged wiring, a malfunctioning control module, or issues with the air suspension components.

3. How can I diagnose the cause of OBDII code C1806 in my vehicle's air suspension system?

- To diagnose the issue, you can use a diagnostic scanner to retrieve the trouble codes, visually inspect the height sensor and wiring, and perform any necessary tests recommended by the manufacturer.

4. Are there any DIY repair tips for fixing OBDII code C1806 related to the air suspension vehicle height sensor?

- DIY repair tips include checking and cleaning the height sensor connectors, ensuring proper wiring connections, and resetting the system to clear the code.

5. Is it safe to drive with OBDII code C1806 triggered in the air suspension system?

- It is not recommended to drive with the code C1806 triggered as it can affect the vehicle's handling, stability, and overall safety. It is best to address the issue promptly.

6. How much does it typically cost to repair OBDII code C1806 in the air suspension system?

- The cost of repair for OBDII code C1806 can vary depending on the underlying cause, but it may involve replacing the height sensor, repairing wiring, or reprogramming the control module.

7. Can OBDII code C1806 be intermittent or recurring in the air suspension system?

- Yes, OBDII code C1806 can be intermittent or recurring if the underlying issue is not properly addressed or if there are ongoing problems with the height sensor or related components.

8. Are there any preventive maintenance steps to avoid OBDII code C1806 in the air suspension system?

- Regularly inspecting the air suspension components, keeping the height sensor clean and free of debris, and addressing any suspension issues promptly can help prevent OBDII code C1806.

9. Can resetting the vehicle's computer clear OBDII code C1806 related to the air suspension system?

- Resetting the vehicle's computer may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to return. It is recommended to diagnose and repair the problem.

10. How long does it take to repair OBDII code C1806 in the air suspension system?

- The repair time for OBDII code C1806 can vary depending on the complexity of the issue and the availability of parts, but it may take anywhere from a few hours to a day at a professional repair shop.