P0446 Pontiac Code - Evaporative Emission Vent System Performance
Quick Answer
This Diagnostic Trouble Code (DTC) tests the Evaporative Emission (EVAP) system for a restricted or blocked EVAP vent path that would cause excess amounts of vacuum to be developed in the EVAP system. Common causes include Plugged vapor canister, Pinched or blocked EVAP hose, Faulty Evaporative Emission Vent Solenoid Valve. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0446 Pontiac indicates Evaporative Emission Vent System Performance.
- Common causes
- Common causes include Plugged vapor canister, Pinched or blocked EVAP hose, Faulty Evaporative Emission Vent Solenoid Valve.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P0446 Pontiac Description
What are the Possible Causes of the DTC P0446 Pontiac?
- Plugged vapor canister
- Pinched or blocked EVAP hose
- Faulty Evaporative Emission Vent Solenoid Valve
- Evaporative Emission Vent Solenoid Valve harness is open or shorted
- Evaporative Emission Vent Solenoid Valve circuit poor electrical connection
- Faulty Fuel Tank Pressure (FTP) sensor
How to Fix the DTC P0446 Pontiac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0446 Pontiac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0446 Pontiac code?
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Frequently Asked Questions about P0446 Pontiac Code
1. What does OBDII code P0446 for a Pontiac indicate?
- OBDII code P0446 for a Pontiac indicates a problem with the Evaporative Emission Control System Vent Control Circuit.
2. What are common symptoms of a P0446 error code in a Pontiac?
- Common symptoms of a P0446 error code in a Pontiac may include the check engine light illuminating, a noticeable fuel odor, and potential difficulties when refueling.
3. What are possible causes of the P0446 code in a Pontiac?
- Possible causes of the P0446 code in a Pontiac can include a faulty vent valve, a damaged charcoal canister, a blocked vent filter, or issues with the wiring or connectors.
4. How can I diagnose the P0446 code on my Pontiac?
- Diagnosing the P0446 code on your Pontiac may involve checking the vent valve, inspecting the charcoal canister, examining the vent filter, and testing the related wiring and connectors for any faults.
5. Can I continue driving my Pontiac with a P0446 code?
- It is generally safe to drive your Pontiac with a P0446 code, but it is recommended to have the issue diagnosed and repaired promptly to prevent potential emissions problems and ensure optimal vehicle performance.
6. How can I repair a P0446 code on a Pontiac?
- Repairing a P0446 code on a Pontiac may involve replacing the vent valve, repairing or replacing the charcoal canister, cleaning or replacing the vent filter, and addressing any wiring or connector issues as needed.
7. Will resetting the check engine light fix the P0446 code in my Pontiac?
- Simply resetting the check engine light will not fix the underlying issue causing the P0446 code in your Pontiac. It is important to diagnose the problem and perform the necessary repairs to address the code properly.
8. Can a DIY enthusiast fix the P0446 code on a Pontiac?
- While some DIY enthusiasts may be able to address the P0446 code by replacing components like the vent valve or cleaning the vent filter, diagnosing and repairing certain aspects of this issue may require professional expertise.
9. How much does it cost to repair a P0446 code on a Pontiac?
- The cost to repair a P0446 code on a Pontiac can vary depending on the specific cause of the issue, the parts needed for replacement, and whether you choose to do the repairs yourself or seek professional assistance.
10. Is it important to address the P0446 code promptly in my Pontiac?
- Yes, it is important to address the P0446 code promptly in your Pontiac to maintain proper emission control, ensure efficient fuel usage, and prevent potential long-term damage to the vehicle's components.
Discuss the causes and fixes for P0446 Pontiac OBDII Code
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I've replaced purge valve solenoid, purge canister, and bought a new gas cap, and still check engine light with code for P0446 is showing. What should be my next step?
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