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Engine-Codes – KIA – P1673 KIA

P1673 KIA Code - Cooling Fan Relay Circuit Malfunction

Quick Answer

The P1673 Kia code indicates a cooling fan relay circuit malfunction. Common causes include Faulty cooling fan relay: The most common cause of this code is a faulty cooling fan relay, The relay may fail due to wear and tear or electrical issues, Wiring issues: Damage to the wiring connected to the cooling fan relay can also trigger this code. 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
P1673 KIA indicates Cooling Fan Relay Circuit Malfunction.
Common causes
Common causes include Faulty cooling fan relay: The most common cause of this code is a faulty cooling fan relay, The relay may fail due to wear and tear or electrical issues, Wiring issues: Damage to the wiring connected to the cooling fan relay can also trigger this code.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1673 KIA Description

The P1673 Kia code indicates a cooling fan relay circuit malfunction. The cooling fan is a crucial component of the vehicle's cooling system, responsible for maintaining the engine's temperature within the optimal range. The cooling fan relay is an electrical component that controls the operation of the cooling fan. When this relay malfunctions, it can lead to issues with the cooling system, potentially causing the engine to overheat.

OBDII Code P1673 KIA - Cooling Fan Relay Circuit Malfunction
P1673 KIA Code - Cooling Fan Relay Circuit Malfunction

Common Causes of P1673 KIA

  1. Faulty cooling fan relay: The most common cause of this code is a faulty cooling fan relay. The relay may fail due to wear and tear or electrical issues.
  2. Wiring issues: Damage to the wiring connected to the cooling fan relay can also trigger this code. Broken or corroded wires can disrupt the circuit and prevent the relay from functioning properly.
  3. Cooling fan motor failure: If the cooling fan motor fails, it can also lead to a cooling fan relay circuit malfunction.
  4. Engine control module (ECM) issues: Problems with the ECM, which controls the operation of various components in the vehicle, can also contribute to this code.

Symptoms of P1673 KIA

  1. Engine overheating: The most common symptom of a cooling fan relay circuit malfunction is the engine overheating. If the cooling fan does not turn on when needed, the engine's temperature can rise to dangerous levels.
  2. Check engine light: The P1673 Kia code may trigger the check engine light on the dashboard, indicating a problem with the cooling fan relay circuit.
  3. Reduced engine performance: As the engine overheats, it may start to lose power and performance due to the increased temperature.
  4. Cooling fan not working: If the cooling fan does not turn on at all, it may indicate a problem with the cooling fan relay circuit.

How to Fix P1673 KIA

  1. Diagnose the issue: The first step in repairing the P1673 Kia code is to diagnose the exact cause of the cooling fan relay circuit malfunction. This may involve using a diagnostic tool to scan for codes and testing the components involved.
  2. Replace the cooling fan relay: If the cooling fan relay is found to be faulty, it will need to be replaced. The new relay should be installed following the manufacturer's guidelines.
  3. Check the wiring: Inspect the wiring connected to the cooling fan relay for any damage or corrosion. Replace any damaged wires and ensure a secure connection.
  4. Test the cooling fan: After replacing the relay and checking the wiring, test the cooling fan to ensure it turns on when needed. This can be done by running the engine and monitoring the temperature.
  5. Clear the code: Once the repair is complete, clear the P1673 Kia code from the vehicle's memory using a diagnostic tool.

Cost to Fix P1673 KIA

The cost of repairing a cooling fan relay circuit malfunction can vary depending on the extent of the issue and the specific vehicle make and model. In general, the cost of a new cooling fan relay can range from $50 to $200, depending on the brand and quality. Labor costs for this repair are typically between $100 and $300, with a total repair cost ranging from $150 to $500. It's important to note that these are rough estimates, and actual costs may vary based on factors like location, shop rates, and additional repairs needed. It's advisable to consult with a professional mechanic for a more accurate cost estimate.

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Information for Specific KIA Models

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 P1673 KIA Code

1. What does the P1673 code mean for a Kia vehicle?

The P1673 code indicates a Cooling Fan Relay Circuit Malfunction, meaning there’s an issue with the electrical circuit controlling the radiator fan.

2. What are the common symptoms of the P1673 code?

Symptoms may include the engine overheating, the cooling fan not operating, or the Check Engine Light being illuminated.

3. What causes the P1673 code to appear?

Common causes include a faulty cooling fan relay, damaged wiring or connectors in the cooling fan circuit, or a malfunctioning Engine Control Module (ECM).

4. Can I drive my Kia with the P1673 code?

It’s not recommended, as the cooling fan may not function properly, potentially leading to engine overheating and severe damage.

5. How do I diagnose the P1673 code?

Start by checking the cooling fan relay, inspecting the wiring and connectors for damage, and using a multimeter to test the circuit for continuity.

6. How can I fix the P1673 code on my Kia?

Repairs may include replacing a faulty cooling fan relay, repairing damaged wiring, or addressing issues with the ECM if necessary.

7. How much does it cost to fix the P1673 code?

Repair costs vary but typically range from $50 to $150 for a relay replacement, with additional labor costs if wiring or deeper diagnostics are needed.

8. Could a blown fuse cause the P1673 code?

Yes, a blown fuse in the cooling fan circuit can disrupt the relay’s function and trigger the P1673 code.

9. Can a weak battery cause the P1673 code?

Yes, low voltage from a weak or failing battery can affect the cooling fan relay circuit and cause this code to appear.

10. Will resetting the code fix the problem?

Clearing the code without addressing the root cause may temporarily turn off the Check Engine Light, but the issue will likely return until properly repaired.

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