AutoCodes – Infiniti – C1803 Infiniti

C1803 Infiniti Code - Air Suspension Exhaust Solenoid

Quick Answer

The Air Levelizer Control Module monitors the Exhaust Solenoid. Common causes include Faulty Exhaust Solenoid, Exhaust Solenoid harness is open or shorted, Exhaust Solenoid 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: C1803 Infiniti indicates Air Suspension Exhaust Solenoid.
Common causes: Common causes include Faulty Exhaust Solenoid, Exhaust Solenoid harness is open or shorted, Exhaust Solenoid 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 9,359

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 C1803 Infiniti Description

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

OBDII Code C1803 Infiniti - Air Suspension Exhaust Solenoid - AutoCodes.com — C1803 Infiniti Code - Air Suspension Exhaust Solenoid

What does this mean?

What are the Possible Causes of the DTC C1803 Infiniti?

Faulty Exhaust Solenoid
Exhaust Solenoid harness is open or shorted
Exhaust Solenoid circuit poor electrical connection
Faulty Air Levelizer Control Module

How to Fix the DTC C1803 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 C1803 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 C1803 Infiniti code?

Need more information on how to fix the C1803 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1803 Infiniti 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 C1803 Infiniti Code

1. What are the common symptoms of OBDII code C1803 Infiniti related to the Air Suspension Exhaust Solenoid?

- Common symptoms include a noticeable decrease in air suspension performance, a rough or bumpy ride, and the air suspension system failing to adjust properly.

2. What are some possible causes of OBDII code C1803 in an Infiniti related to the Air Suspension Exhaust Solenoid?

- Potential causes include a faulty air suspension exhaust solenoid, damaged wiring or connectors, low air pressure in the suspension system, or a malfunctioning air compressor.

3. How can I diagnose OBDII code C1803 in my Infiniti related to the Air Suspension Exhaust Solenoid?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, visually inspecting the air suspension components for any visible damage, and testing the solenoid and related components for proper functionality.

4. Is it safe to continue driving my Infiniti with OBDII code C1803 related to the Air Suspension Exhaust Solenoid?

- It is not recommended to drive your vehicle with this fault code present, as it can lead to further damage to the air suspension system and compromise the vehicle's ride quality and handling.

5. How can I repair OBDII code C1803 in my Infiniti related to the Air Suspension Exhaust Solenoid?

- Repairing this code typically involves replacing the faulty air suspension exhaust solenoid, repairing any damaged wiring or connectors, ensuring proper air pressure in the system, and testing the system for proper operation.

6. Can a DIY enthusiast fix OBDII code C1803 in an Infiniti related to the Air Suspension Exhaust Solenoid?

- While some enthusiasts may have the skills to diagnose and replace the air suspension exhaust solenoid, it is recommended to consult a professional mechanic or technician for proper diagnosis and repair to ensure the system functions correctly.

7. How much does it cost to repair OBDII code C1803 in an Infiniti related to the Air Suspension Exhaust Solenoid?

- The cost of repair can vary depending on the extent of the issue, the cost of parts needed, and labor rates. On average, the repair cost for this code can range from $200 to $600, including parts and labor.

8. Are there any preventive maintenance steps I can take to avoid OBDII code C1803 related to the Air Suspension Exhaust Solenoid in my Infiniti?

- Regularly inspecting the air suspension system for any signs of wear or damage, maintaining proper air pressure levels, and addressing any issues promptly can help prevent this fault code from occurring.