AutoCodes – Nissan – C1803 Nissan

C1803 Nissan 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 Nissan 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 5,941
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 C1803 Nissan 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 Nissan -  Air Suspension Exhaust Solenoid - AutoCodes.com
C1803 Nissan Code - Air Suspension Exhaust Solenoid

What are the Possible Causes of the DTC C1803 Nissan?

  • 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 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 C1803 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 C1803 Nissan code?

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

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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 C1803 Nissan Code

1. What does OBDII code C1803 for Nissan Air Suspension Exhaust Solenoid indicate?

The code C1803 suggests a malfunction related to the air suspension exhaust solenoid in a Nissan vehicle.

2. What are common symptoms of a C1803 fault in the air suspension system?

Common symptoms include issues with the vehicle's ride quality, abnormal suspension behavior, and possible warning lights on the dashboard.

3. What are the potential causes of OBDII code C1803 in a Nissan vehicle?

Possible causes of the C1803 code can include a faulty air suspension exhaust solenoid, wiring issues, or problems with the air suspension system's control module.

4. How can I diagnose a C1803 fault in my Nissan's air suspension system?

Diagnosing a C1803 fault typically involves using an OBDII scanner to read the code, conducting a visual inspection of the air suspension components, and performing tests on the solenoid and related wiring.

5. Can I continue driving my Nissan with a C1803 fault code present?

It is not recommended to drive your Nissan with a C1803 fault as it can affect the vehicle's suspension performance and overall safety.

6. Is it possible to repair a C1803 fault in the air suspension system myself?

While some DIY enthusiasts may attempt to address a C1803 fault, it is often best to have a qualified mechanic diagnose and repair the issue to ensure proper resolution.

7. How much does it cost to repair a C1803 fault in a Nissan's air suspension system?

The cost of repairing a C1803 fault can vary depending on the exact cause of the issue, the parts needed, and the labor rates of the repair shop. It is advisable to obtain quotes from multiple mechanics.

8. Are there any preventive maintenance tips to avoid a C1803 fault in the air suspension system?

Regularly inspecting the air suspension components, addressing any warning signs promptly, and following the manufacturer's maintenance schedule can help prevent issues like the C1803 fault.

9. Can a C1803 fault affect other systems in my Nissan vehicle?

While the C1803 fault primarily relates to the air suspension exhaust solenoid, it is essential to address the issue promptly as unresolved faults can sometimes lead to broader system malfunctions.

10. How long does it typically take to repair a C1803 fault in a Nissan's air suspension system?

The repair time for a C1803 fault can vary depending on the exact cause of the issue, the availability of parts, and the workload of the repair shop. It is advisable to inquire about the estimated repair time when scheduling the service.

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