Engine-CodesHyundai – P1672 Hyundai

P1672 Hyundai Code - Fan Relay Malfunction Low Speed

Quick Answer

The P1672 Hyundai diagnostic trouble code indicates a malfunction in the fan relay at low speed. Common causes include Faulty fan relay, Wiring issues, Defective cooling fan motor. 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
P1672 Hyundai indicates Fan Relay Malfunction Low Speed.
Common causes
Common causes include Faulty fan relay, Wiring issues, Defective cooling fan motor.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1672 Hyundai Description

The P1672 Hyundai diagnostic trouble code indicates a malfunction in the fan relay at low speed. In a vehicle, the cooling fan plays a crucial role in maintaining the optimal operating temperature of the engine. The fan relay is responsible for controlling the activation of the cooling fan, particularly at low speeds when the engine may generate more heat than usual. When this relay malfunctions, it can lead to inadequate cooling of the engine, causing it to overheat and potentially leading to severe damage if not addressed promptly.

OBDII Code P1672 Hyundai - Fan Relay Malfunction Low Speed
P1672 Hyundai Code - Fan Relay Malfunction Low Speed

Common Causes of P1672 Hyundai

  1. Faulty fan relay
  2. Wiring issues
  3. Defective cooling fan motor
  4. Engine temperature sensor malfunction
  5. Electrical system problems

Symptoms of P1672 Hyundai

  1. Engine overheating
  2. Check engine light illuminated
  3. Decreased cooling fan operation at low speeds
  4. Reduced air conditioning performance
  5. Strange noises coming from the engine bay

How to Fix P1672 Hyundai

  1. Begin by diagnosing the specific cause of the issue by using a scan tool to retrieve the trouble code and inspecting the fan relay, wiring, cooling fan motor, and temperature sensor.
  2. Replace the faulty fan relay if it is found to be the root cause of the problem. Ensure the replacement relay is compatible with the vehicle's make and model.
  3. Check and repair any damaged wiring connections or harnesses that may be affecting the operation of the cooling fan.
  4. Test the cooling fan motor to verify proper operation. Replace the motor if it is defective or not functioning correctly.
  5. Verify the engine temperature sensor's functionality and replace it if necessary to ensure accurate temperature readings and proper fan operation.

Cost to Fix P1672 Hyundai

The typical repair costs for addressing a P1672 Hyundai code can range from $150 to $400, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may charge less. It's recommended to check local rates for a more accurate estimate before proceeding with the repair.

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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 P1672 Hyundai Code

1. What does the OBDII code P1672 mean on a Hyundai?

Code P1672 indicates a "Fan Relay Malfunction Low Speed," meaning the low-speed circuit of the cooling fan relay is not functioning properly.

2. What are the common symptoms of a P1672 code on a Hyundai?

Symptoms include overheating, the cooling fan not activating at low speed, and possible engine performance issues.

3. What causes the P1672 code on a Hyundai?

Common causes include a faulty fan relay, damaged wiring or connectors, a defective cooling fan motor, or issues with the engine control module (ECM).

4. Can I drive my Hyundai with a P1672 code?

Driving with this code is not recommended as the cooling fan malfunction can lead to engine overheating and potential engine damage.

5. How do I fix the P1672 code on a Hyundai?

Repairs typically involve replacing the faulty fan relay, repairing damaged wiring or connectors, or diagnosing further issues with the cooling fan motor or ECM.

6. How can I test a cooling fan relay for a P1672 code?

You can test the relay by using a multimeter to check for continuity and proper operation when the relay is energized.

7. Does the P1672 code indicate a problem with the high-speed fan operation?

No, this code specifically refers to a malfunction in the low-speed operation of the cooling fan.

8. Will replacing the fan relay always fix the P1672 code?

Not always; you should inspect the wiring, connectors, and cooling fan motor for additional issues before replacing parts.

9. How much does it cost to repair a P1672 code on a Hyundai?

Repair costs vary but typically range from $50 to $150 for a replacement relay. Additional diagnostics or parts may increase costs.

10. How can I prevent the P1672 code from occurring again?

Regularly inspect the cooling fan system, wiring, and relays for wear or damage, and ensure proper maintenance of the vehicle's electrical system.

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