AutoCodes – Nissan – C1802 Nissan

C1802 Nissan Code - Air Suspension Air Compressor Relay

Quick Answer

The Air Levelizer Control Module monitors the Air Compressor Relay. Common causes include Faulty Air Compressor Relay, Air Compressor Relay harness is open or shorted, Air Compressor Relay 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: C1802 Nissan indicates Air Suspension Air Compressor Relay.
Common causes: Common causes include Faulty Air Compressor Relay, Air Compressor Relay harness is open or shorted, Air Compressor Relay 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 2,023

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 C1802 Nissan Description

The Air Levelizer Control Module monitors the Air Compressor Relay. The Air Levelizer Control Module sets the OBDII code when the Air Compressor Relay is not to factory specifications.

OBDII Code C1802 Nissan - Air Suspension Air Compressor Relay - AutoCodes.com — C1802 Nissan Code - Air Suspension Air Compressor Relay

What does this mean?

What are the Possible Causes of the DTC C1802 Nissan?

Faulty Air Compressor Relay
Air Compressor Relay harness is open or shorted
Air Compressor Relay circuit poor electrical connection
Faulty Air Levelizer Control Module

How to Fix the DTC C1802 Nissan?

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 C1802 Nissan 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 C1802 Nissan code?

Need more information on how to fix the C1802 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1802 Nissan 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 C1802 Nissan Code

1. What are the common symptoms of OBDII code C1802 in a Nissan related to the Air Suspension Air Compressor Relay?

The common symptoms include the air suspension system not working properly, abnormal ride height, or the air compressor not engaging.

2. What are the possible causes of OBDII code C1802 in a Nissan related to the Air Suspension Air Compressor Relay?

Potential causes include a faulty air compressor relay, a damaged wiring harness, a blown fuse, or an issue with the air suspension control module.

3. How can I diagnose the OBDII code C1802 in a Nissan related to the Air Suspension Air Compressor Relay?

Diagnosis involves checking the air compressor relay for proper functioning, inspecting the wiring for any damage, testing the fuse for continuity, and scanning the air suspension control module for error codes.

4. Can I drive my Nissan with OBDII code C1802 related to the Air Suspension Air Compressor Relay?

It is not recommended to drive the vehicle with this code active, as it may lead to further damage to the air suspension system or affect the ride quality and safety.

5. How can I repair OBDII code C1802 in a Nissan related to the Air Suspension Air Compressor Relay?

Repair involves replacing the faulty air compressor relay, repairing any damaged wiring, replacing blown fuses, or addressing any issues with the air suspension control module.

6. Are there any DIY tips for addressing OBDII code C1802 in a Nissan related to the Air Suspension Air Compressor Relay?

While some basic checks like inspecting fuses and relays can be done by DIY enthusiasts, it is recommended to consult a professional technician for a comprehensive diagnosis and repair.

7. Is it expensive to fix OBDII code C1802 related to the Air Suspension Air Compressor Relay in a Nissan?

The cost of repair can vary depending on the exact cause of the issue. Replacing a relay or fuse may be relatively affordable, but more complex problems with the air suspension system can be costly to fix.

8. Can a malfunctioning Air Suspension Air Compressor Relay affect other systems in my Nissan?

Yes, a malfunctioning air compressor relay can affect the overall performance of the air suspension system, leading to issues with ride quality, handling, and potentially impacting other vehicle systems.

9. How often does the Air Suspension Air Compressor Relay in a Nissan need to be replaced?

The air compressor relay typically does not require frequent replacement, but it can fail over time due to wear and tear or electrical issues. Regular maintenance and inspections can help prevent sudden failures.

10. What should I do if OBDII code C1802 persists in my Nissan after attempting repairs related to the Air Suspension Air Compressor Relay?

If the code persists after repair attempts, it is advisable to seek professional help from a certified technician who can conduct a thorough diagnosis to identify the root cause of the issue and provide a proper solution.