P1673 GMC Code - EVAP Vent Solenoid Control Circuit Conditions
Quick Answer
The P1673 GMC code specifically relates to an issue with the EVAP (Evaporative Emission Control System) Vent Solenoid Control Circuit. Common causes include Faulty EVAP vent solenoid, Wiring issue in the EVAP vent solenoid control circuit, PCM malfunction. 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 GMC indicates EVAP Vent Solenoid Control Circuit Conditions.
- Common causes
- Common causes include Faulty EVAP vent solenoid, Wiring issue in the EVAP vent solenoid control circuit, PCM malfunction.
- 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 GMC Description
The P1673 GMC code specifically relates to an issue with the EVAP (Evaporative Emission Control System) Vent Solenoid Control Circuit. The EVAP system is designed to capture and store fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The vent solenoid is responsible for controlling the flow of vapors from the fuel tank to the engine, where they can be burned off.
Common Causes of P1673 GMC
- Faulty EVAP vent solenoid
- Wiring issue in the EVAP vent solenoid control circuit
- PCM malfunction
- Corrosion or damage to the electrical connectors
- Vacuum leak in the EVAP system
Symptoms of P1673 GMC
- Check engine light illuminated on the dashboard
- Decreased fuel efficiency
- Rough idle or stalling
- Strong fuel odor near the vehicle
- Failed emissions test
How to Fix P1673 GMC
- Diagnose the issue by using a scan tool to retrieve the fault code and inspecting the EVAP system for any visible damage.
- Test the EVAP vent solenoid to determine if it is functioning properly. This can be done by applying power to the solenoid and checking for proper operation.
- Inspect the wiring and connectors in the EVAP vent solenoid control circuit for any signs of damage or corrosion. Repair or replace as necessary.
- Clear the fault code from the PCM memory after making any repairs and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnostics may be required to pinpoint the exact cause of the issue.
Cost to Fix P1673 GMC
The cost of repairing a P1673 GMC code can vary depending on the specific cause of the issue and the labor rates at the repair shop. In general, the cost of replacing an EVAP vent solenoid can range from $100 to $200, including parts and labor. Additional costs may be incurred if wiring repairs or PCM replacement is necessary. It is recommended to consult with a trusted mechanic for a more accurate estimate based on your vehicle make and model.
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Frequently Asked Questions about P1673 GMC Code
What does the OBDII code P1673 mean on a GMC vehicle?
The P1673 code indicates an issue with the EVAP vent solenoid control circuit, which is part of the evaporative emissions system designed to prevent fuel vapors from escaping into the atmosphere.
What are the common symptoms of a P1673 code?
Common symptoms include the check engine light turning on, possible fuel odor near the vehicle, and in some cases, difficulty refueling or decreased fuel efficiency.
What causes the P1673 code to appear?
Typical causes include a faulty EVAP vent solenoid, damaged wiring or connectors in the control circuit, or a malfunction in the engine control module (ECM).
Can a loose gas cap trigger the P1673 code?
While a loose or damaged gas cap can cause EVAP system-related codes, the P1673 code specifically points to issues with the vent solenoid control circuit, not the gas cap.
How do you diagnose the P1673 code?
Diagnosis involves checking the EVAP vent solenoid, inspecting the wiring and connectors for damage, and using a scan tool to test the circuit's functionality.
Is it safe to drive with a P1673 code?
While the vehicle may remain drivable, ignoring the code could lead to increased emissions and potential long-term damage to the EVAP system. It’s best to address the issue promptly.
How is the P1673 code typically fixed?
Repairs may involve replacing the EVAP vent solenoid, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
What tools are needed to fix the P1673 code?
A diagnostic scan tool, a multimeter for testing circuits, and basic hand tools for replacing components are commonly used to address this issue.
Can extreme weather cause the P1673 code?
Extreme weather, especially heavy rain or snow, can sometimes cause water intrusion or corrosion in the EVAP vent solenoid or its wiring, potentially triggering this code.
How much does it cost to repair a P1673 code on a GMC?
Repair costs can vary but typically range from $100 to $300, depending on whether the vent solenoid, wiring, or ECM requires replacement or repair.
Discuss the causes and fixes for P1673 GMC OBDII Code
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