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P1622 Hyundai Code - A/C Control Relay Circuit Failure

Quick Answer

The P1622 Hyundai code indicates a problem with the A/C control relay circuit in the vehicle. Common causes include Faulty A/C control relay, Wiring issues in the A/C control relay circuit, Defective A/C control module. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P1622 Hyundai indicates A/C Control Relay Circuit Failure.
Common causes
Common causes include Faulty A/C control relay, Wiring issues in the A/C control relay circuit, Defective A/C control module.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1622 Hyundai Description

The P1622 Hyundai code indicates a problem with the A/C control relay circuit in the vehicle. This circuit is responsible for controlling the operation of the air conditioning system, including turning the compressor on and off as needed to regulate the temperature inside the vehicle. When this circuit fails, it can lead to issues with the air conditioning system, causing it to malfunction or not work at all.

OBDII Code P1622 Hyundai - A/C Control Relay Circuit Failure
P1622 Hyundai Code - A/C Control Relay Circuit Failure

Common Causes of P1622 Hyundai

  1. Faulty A/C control relay
  2. Wiring issues in the A/C control relay circuit
  3. Defective A/C control module
  4. Blown fuse related to the A/C system
  5. Poor electrical connections in the A/C system

Symptoms of P1622 Hyundai

  1. Lack of cold air coming from the air conditioning system
  2. Intermittent cooling or inconsistent temperature control
  3. A/C compressor not engaging when the system is turned on
  4. Unusual noises coming from the air conditioning system
  5. A/C system not responding to temperature adjustments

How to Fix P1622 Hyundai

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and further inspect the A/C control relay circuit.
  2. Check the A/C control relay for proper operation and replace if necessary.
  3. Inspect the wiring and connections in the A/C control relay circuit for any signs of damage or corrosion.
  4. Test the A/C control module to ensure it is functioning correctly and replace if needed.
  5. Clear the trouble code from the vehicle's computer and test the air conditioning system to verify that the issue has been resolved.

Cost to Fix P1622 Hyundai

The typical repair costs for resolving a P1622 Hyundai code related to A/C control relay circuit failure can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Generally, the cost can range from $100 to $300 for parts and labor. It's recommended to check with local auto repair shops for a more accurate estimate based on the vehicle make and model, as well as the severity of the problem. Keep in mind that additional diagnostic time may be required to pinpoint the exact cause of the issue, which could affect the final repair cost.

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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 P1622 Hyundai Code

1. What does the OBDII code P1622 mean for Hyundai vehicles?

P1622 indicates an A/C control relay circuit failure, meaning the relay that controls the air conditioning system is malfunctioning or has a wiring issue.

2. What are the common symptoms of code P1622 in a Hyundai?

Symptoms may include the A/C not working, intermittent cooling, or the A/C system failing to turn on entirely.

3. What causes the P1622 code to appear in Hyundai vehicles?

Common causes include a faulty A/C control relay, damaged wiring or connectors, or issues with the HVAC control module.

4. How can I diagnose a P1622 code in my Hyundai?

Start by checking the A/C relay for proper operation, inspect wiring and connectors for damage or corrosion, and use a multimeter to test circuit continuity.

5. Can a failing A/C relay cause the P1622 code?

Yes, a failing or stuck A/C relay is one of the most common reasons for this code.

6. Is it safe to drive with the P1622 code in a Hyundai?

Yes, it’s generally safe to drive, but you may experience issues with your air conditioning system not functioning properly.

7. How do I fix the P1622 code on a Hyundai?

Repairs may involve replacing the A/C control relay, repairing damaged wiring, or addressing issues with the HVAC control module.

8. How much does it cost to fix the P1622 code?

Costs can range from $50 to $200 depending on whether you need a new relay, wiring repairs, or further diagnostics.

9. Can a weak battery trigger the P1622 code in a Hyundai?

While uncommon, electrical issues such as a weak battery or poor ground connections could contribute to this code.

10. Do I need special tools to fix the P1622 code?

Basic tools like a multimeter and socket wrench may suffice, but a diagnostic scanner can help confirm the issue more efficiently.

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