P1673 Code - Cooling Fan Relay Circuit Malfunction
Quick Answer
The P1673 code indicates a malfunction in the cooling fan relay circuit of the vehicle. Common causes include Faulty cooling fan relay: The relay responsible for controlling the cooling fan may be defective, causing the circuit malfunction, Wiring or connector issues: Damaged or corroded wiring or connectors in the relay circuit can disrupt the flow of electricity and cause the code to trigger, Defective cooling fan motor: A malfunctioning cooling fan motor can prevent the fan from operating properly, leading to the code being set. 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 indicates Cooling Fan Relay Circuit Malfunction.
- Common causes
- Common causes include Faulty cooling fan relay: The relay responsible for controlling the cooling fan may be defective, causing the circuit malfunction, Wiring or connector issues: Damaged or corroded wiring or connectors in the relay circuit can disrupt the flow of electricity and cause the code to trigger, Defective cooling fan motor: A malfunctioning cooling fan motor can prevent the fan from operating properly, leading to the code being set.
- 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 P1673 Description
The P1673 code indicates a malfunction in the cooling fan relay circuit of the vehicle. The cooling fan relay is responsible for controlling the operation of the cooling fan, which helps regulate the engine's temperature by dissipating heat. When this circuit malfunctions, it can lead to the cooling fan not operating properly, resulting in potential overheating of the engine.
Common Causes of P1673
- Faulty cooling fan relay: The relay responsible for controlling the cooling fan may be defective, causing the circuit malfunction.
- Wiring or connector issues: Damaged or corroded wiring or connectors in the relay circuit can disrupt the flow of electricity and cause the code to trigger.
- Defective cooling fan motor: A malfunctioning cooling fan motor can prevent the fan from operating properly, leading to the code being set.
- Engine coolant temperature sensor problems: Issues with the temperature sensor can affect the operation of the cooling fan relay, triggering the code.
Symptoms of P1673
- Engine overheating: One of the most common symptoms associated with this code is the engine overheating due to the cooling fan not functioning properly.
- High engine temperature gauge: The temperature gauge on the dashboard may show a higher-than-normal reading, indicating potential cooling system issues.
- Cooling fan not running: The cooling fan may not turn on at all, even when the engine reaches operating temperature.
- Poor air conditioning performance: The air conditioning system may not cool effectively if the cooling fan is not working correctly.
How to Fix P1673
- Diagnostic scan: Use an OBD-II scanner to retrieve the specific code and pinpoint the exact cause of the issue.
- Inspect wiring and connectors: Check the wiring and connectors in the cooling fan relay circuit for any damage or corrosion, and repair or replace as needed.
- Test cooling fan relay: Test the cooling fan relay to determine if it is functioning correctly, and replace if necessary.
- Check cooling fan motor: Inspect the cooling fan motor for any signs of damage or malfunction, and replace if required.
- Clear codes and test: Clear the diagnostic trouble codes from the vehicle's computer, and test the cooling fan to ensure it operates properly.
Cost to Fix P1673
The typical repair costs for a cooling fan relay circuit malfunction can range from $150 to $400, including parts and labor. However, 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. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
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Code P1673 Information for Specific Makes
- P1673 Buick — EVAP Vent Solenoid Control Circuit Conditions
- P1673 Cadillac — EVAP Vent Solenoid Control Circuit Conditions
- P1673 Chevrolet — EVAP Vent Solenoid Control Circuit Conditions
- P1673 GMC — EVAP Vent Solenoid Control Circuit Conditions
- P1673 Hyundai — Fan Relay Malfunction High Speed
- P1673 KIA — Cooling Fan Relay Circuit Malfunction
- P1673 Land Rover — Engine Anti-Theft Signal New ECM Not Configured
Frequently Asked Questions about P1673 Code
What does the OBDII code P1673 mean?
1. P1673 indicates a Cooling Fan Relay Circuit Malfunction, meaning the engine control module (ECM) has detected an issue in the circuit controlling the cooling fan relay. 2.
What are the common symptoms of the P1673 code?
Common symptoms include engine overheating, the cooling fan not turning on, increased engine temperature readings, and possible activation of the check engine light. 3.
What causes the P1673 code to appear?
The code can be caused by a faulty cooling fan relay, damaged wiring or connectors in the relay circuit, a blown fuse, or a malfunctioning engine control module (ECM). 4.
Can I drive my car with the P1673 code active?
Driving with the P1673 code is not recommended, as it may lead to engine overheating and potential damage if the cooling fan isn't functioning properly. 5.
How do I diagnose the P1673 code?
Diagnosis involves checking the cooling fan relay, inspecting the wiring and connectors for damage or corrosion, testing the relay for proper operation, and verifying ECM inputs and outputs. 6.
How can I fix the P1673 code?
Repairs may include replacing a faulty cooling fan relay, repairing damaged wiring or connectors, replacing blown fuses, or, in rare cases, reprogramming or replacing the ECM. 7.
How much does it cost to fix the P1673 code?
The repair cost varies but typically ranges from $50 to $150 for a relay replacement. More extensive wiring or ECM repairs can cost significantly more, depending on the complexity. 8.
Can a blown fuse cause the P1673 code?
Yes, a blown fuse in the cooling fan circuit can interrupt power to the relay, triggering the P1673 code. 9.
How do I prevent the P1673 code from recurring?
Regularly inspect the cooling fan system, including the relay, wiring, and fuses, for signs of wear, corrosion, or damage, and address issues promptly. 10.
Will the check engine light turn off automatically after fixing the P1673 code?
The check engine light may turn off after repairs if the issue is resolved. If it doesn’t, you may need to clear the code using an OBDII scanner.
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