AutoCodes – Generic – C1814

C1814 Code - Air Suspension RR Vent Request Exceeded Max Timing

Quick Answer

The Vehicle Dynamics Module (VDM) monitors the Air Suspension RR Vent. Common causes include Faulty Air Suspension RR Vent, Air Suspension RR Vent harness is open or shorted, Air Suspension RR Vent 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: C1814 indicates Air Suspension RR Vent Request Exceeded Max Timing.
Common causes: Common causes include Faulty Air Suspension RR Vent, Air Suspension RR Vent harness is open or shorted, Air Suspension RR Vent 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 3,987

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 C1814 Description

The Vehicle Dynamics Module (VDM) monitors the Air Suspension RR Vent. The VDM sets the OBDII code when the Air Suspension RR Vent is not to factory specifications.

OBDII Code C1814 - Air Suspension RR Vent Request Exceeded Max Timing - AutoCodes.com — C1814 Code - Air Suspension RR Vent Request Exceeded Max Timing

What does this mean?

What are the Possible Causes of the DTC C1814?

Faulty Air Suspension RR Vent
Air Suspension RR Vent harness is open or shorted
Air Suspension RR Vent circuit poor electrical connection

How to Fix the DTC C1814?

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 C1814 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 C1814 code?

Need more information on how to fix the C1814 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1814 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 C1814 Code

1. What are the common symptoms of OBDII code C1814 (Air Suspension RR Vent Request Exceeded Max Timing)?

- Common symptoms include a sagging rear end, uneven ride height, and a "Service Suspension System" warning message on the dashboard.

2. What are some possible causes of OBDII code C1814?

- Possible causes include a faulty rear vent solenoid, a malfunctioning air suspension compressor, a leaking air spring, or issues with the air suspension control module.

3. How can I diagnose the cause of OBDII code C1814?

- Diagnose the code by inspecting the rear air suspension components for leaks, testing the vent solenoid for proper operation, and scanning the air suspension control module for fault codes.

4. What should I check first when troubleshooting OBDII code C1814?

- Start by checking the air suspension system for any visible leaks, ensuring proper air pressure in the system, and inspecting the rear vent solenoid for functionality.

5. Can I continue driving my vehicle with OBDII code C1814?

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

6. How can I reset OBDII code C1814?

- Reset the code by using an OBDII scanner to clear the fault codes stored in the system after addressing the root cause of the issue.

7. What are some repair tips for fixing OBDII code C1814?

- Repair tips include replacing the faulty rear vent solenoid, repairing any air leaks in the system, checking the air suspension compressor for proper function, and ensuring all electrical connections are secure.

8. Is it possible to fix OBDII code C1814 myself, or should I seek professional help?

- Depending on your level of automotive repair experience, you may be able to address this code yourself by following diagnostic procedures and repair recommendations. However, if you are not confident in your abilities, it is advisable to seek professional help.

9. How much does it typically cost to repair OBDII code C1814?

- The cost of repairing this code can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is recommended to obtain quotes from automotive repair shops for an accurate estimate.

10. Are there any preventative maintenance steps I can take to avoid OBDII code C1814 in the future?

- Regularly inspecting the air suspension system for leaks, maintaining proper air pressure, and addressing any issues promptly can help prevent OBDII code C1814 from occurring in the future.