AutoCodes – Infiniti – C1801 Infiniti

C1801 Infiniti Code - Air Suspension Vehicle Height Sensor

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
C1801 Infiniti indicates Air Suspension Vehicle Height Sensor.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 8,340
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 30, 2020
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Code C1801 Infiniti 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 C1801 Infiniti - Air Suspension Vehicle Height Sensor - AutoCodes.com
C1801 Infiniti Code - Air Suspension Vehicle Height Sensor

What are the Possible Causes of the DTC C1801 Infiniti?

  • 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 C1801 Infiniti?

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 C1801 Infiniti 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 C1801 Infiniti code?

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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 C1801 Infiniti Code

1. What are the common symptoms of OBDII code C1801 in an Infiniti related to the Air Suspension Vehicle Height Sensor?

- Common symptoms include erratic vehicle ride height, uneven suspension, and possible warning lights on the dashboard.

2. What are some possible causes of OBDII code C1801 in an Infiniti related to the Air Suspension Vehicle Height Sensor?

- Potential causes may include a faulty height sensor, damaged wiring or connectors, or issues with the air suspension system itself.

3. How can I diagnose the issue related to OBDII code C1801 in an Infiniti's Air Suspension Vehicle Height Sensor?

- Diagnosing the problem typically involves using a diagnostic scanner to read the code, inspecting the height sensor and its connections, and testing the air suspension system components.

4. Can I continue driving my Infiniti with OBDII code C1801 related to the Air Suspension Vehicle Height Sensor?

- It is not recommended to continue driving the vehicle with this code active, as it may lead to further damage to the suspension system or affect the vehicle's handling.

5. How can I repair OBDII code C1801 related to the Air Suspension Vehicle Height Sensor in my Infiniti?

- Repairing the issue may involve replacing the faulty height sensor, repairing damaged wiring, or addressing any issues with the air suspension system components.

6. Are there any preventive maintenance tips to avoid OBDII code C1801 related to the Air Suspension Vehicle Height Sensor in my Infiniti?

- Regularly inspecting the suspension system, checking the height sensor for proper operation, and addressing any issues promptly can help prevent this code from occurring.

7. Can a DIY enthusiast fix OBDII code C1801 related to the Air Suspension Vehicle Height Sensor in an Infiniti?

- While some basic diagnostic and repair tasks can be performed by DIY enthusiasts, addressing complex issues with the air suspension system may require professional expertise.

8. How much does it typically cost to repair OBDII code C1801 related to the Air Suspension Vehicle Height Sensor in an Infiniti?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Will resetting the OBDII code C1801 related to the Air Suspension Vehicle Height Sensor make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

10. How long does it take to repair OBDII code C1801 related to the Air Suspension Vehicle Height Sensor in an Infiniti?

- The repair time can vary based on the specific diagnosis and required repairs, but it may take a few hours to a full day to complete the necessary work.

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