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P1628 Hyundai Code - Condenser Fan Circuit Low

Quick Answer

The P1628 Hyundai code indicates a problem with the condenser fan circuit being detected as operating at a low voltage. Common causes include Faulty condenser fan motor, Damaged wiring or connectors in the condenser fan circuit, Defective fan relay. 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
P1628 Hyundai indicates Condenser Fan Circuit Low.
Common causes
Common causes include Faulty condenser fan motor, Damaged wiring or connectors in the condenser fan circuit, Defective fan relay.
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 P1628 Hyundai Description

The P1628 Hyundai code indicates a problem with the condenser fan circuit being detected as operating at a low voltage. The condenser fan is an essential component in the vehicle's cooling system, as it helps dissipate heat from the air conditioning system and the engine. When the condenser fan circuit is operating at a low voltage, it may not be able to cool the refrigerant properly, leading to issues with the air conditioning system and potentially causing the engine to overheat.

OBDII Code P1628 Hyundai - Condenser Fan Circuit Low
P1628 Hyundai Code - Condenser Fan Circuit Low

Common Causes of P1628 Hyundai

  1. Faulty condenser fan motor.
  2. Damaged wiring or connectors in the condenser fan circuit.
  3. Defective fan relay.
  4. Malfunctioning engine control module (ECM).
  5. Overheating of the engine causing the condenser fan to operate at a low voltage.

Symptoms of P1628 Hyundai

  1. Poor air conditioning performance or lack of cold air coming from the vents.
  2. Engine overheating or temperature gauge reading higher than normal.
  3. Unusual noises coming from the engine compartment.
  4. Check Engine Light illuminated on the dashboard.
  5. Reduced fuel efficiency due to the engine working harder to compensate for cooling system issues.

How to Fix P1628 Hyundai

  1. Begin by conducting a thorough inspection of the condenser fan, wiring, connectors, and relay to identify any visible signs of damage or wear.
  2. Test the condenser fan motor to ensure it is functioning correctly. Replace if necessary.
  3. Check the wiring and connectors for any loose connections or breaks. Repair or replace as needed.
  4. Test the fan relay to determine if it is sending the correct signals to the condenser fan. Replace if found faulty.
  5. If all components check out, consider checking the engine control module (ECM) for any faults or reprogramming it to address the low voltage issue.

Cost to Fix P1628 Hyundai

The typical repair costs for addressing a P1628 Hyundai code related to the condenser fan circuit low issue can vary depending on the specific cause of the problem. On average, the cost of parts such as a condenser fan motor, wiring, connectors, relay, or ECM can range from $100 to $500. Labor costs can add an additional $100 to $300, with total repair costs potentially ranging from $200 to $800 or more. It's advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific vehicle make and model. Keep in mind that diagnosis time and labor rates can vary based on location and shop rates.

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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 P1628 Hyundai Code

1. What does the OBDII code P1628 mean for a Hyundai?

P1628 on a Hyundai indicates a "Condenser Fan Circuit Low," meaning there is an issue with the electrical circuit controlling the condenser fan.

2. What are the symptoms of a P1628 code on a Hyundai?

Symptoms may include the air conditioning not functioning properly, engine overheating, or the condenser fan not running when it should.

3. What causes the P1628 code to trigger in a Hyundai?

Common causes include a faulty condenser fan motor, damaged wiring or connectors in the circuit, a blown fuse, or a malfunctioning relay.

4. Can I drive my Hyundai with a P1628 code?

While it may be possible to drive with this code, prolonged operation can lead to engine overheating and reduced air conditioning performance, which may cause further damage.

5. How do I diagnose a P1628 code on a Hyundai?

Start by inspecting the condenser fan, wiring, and connectors for visible damage. Check the fuse and relay for the fan circuit, and test the fan motor for proper operation.

6. How is the P1628 code fixed on a Hyundai?

Repairs may include replacing the condenser fan motor, repairing damaged wiring, replacing a blown fuse, or swapping out a faulty relay.

7. Can a P1628 code affect other vehicle systems?

Yes, if the condenser fan isn't functioning, it can lead to engine overheating or reduced air conditioning efficiency, potentially affecting overall vehicle performance.

8. How much does it cost to repair a P1628 code on a Hyundai?

Repair costs can vary, but replacing a condenser fan motor or repairing wiring typically costs between $150 and $500, depending on labor rates and parts prices.

9. What tools are needed to fix a P1628 code on a Hyundai?

Basic tools like a multimeter, wiring diagrams, and possibly a scan tool are needed for diagnosis. For repairs, you may need a socket set, pliers, and replacement parts.

10. Can a weak battery cause the P1628 code on a Hyundai?

While unlikely, a weak battery or charging system issue could potentially cause erratic electrical behavior, so it’s worth checking the battery and alternator as part of the diagnosis.

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