have trouble code p0446 check engine light is on?
Jan 31, 2010 at 4:28 PM
trouble code p0446?
1999 CHEVROLET TAHOE
DONNIEB1
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Hello,
The code:
P0446 : Evaporative emission (EVAP) vent system performance.
https://www.2carpros.com/trouble_codes/obd2
This code gets triggered if there is a leak on the EVAP system. The EVAP system includes the fuel tank, vapor canister, vent valves etc.
Sometimes this code appears when the gas cap unable to seal the tank properly. When that happens the fuel vapor will escape the system and that will trigger the light. It can also be triggered for a leak any where else in the system.
Replacing the fuel cap is usually a good first step.
https://www.2carpros.com/articles/evap-system-code-repair
I have attached step by step diagnostics for that code.
Please let me know of any questions.
Thank you.
The code:
P0446 : Evaporative emission (EVAP) vent system performance.
https://www.2carpros.com/trouble_codes/obd2
This code gets triggered if there is a leak on the EVAP system. The EVAP system includes the fuel tank, vapor canister, vent valves etc.
Sometimes this code appears when the gas cap unable to seal the tank properly. When that happens the fuel vapor will escape the system and that will trigger the light. It can also be triggered for a leak any where else in the system.
Replacing the fuel cap is usually a good first step.
https://www.2carpros.com/articles/evap-system-code-repair
I have attached step by step diagnostics for that code.
Please let me know of any questions.
Thank you.
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Aug 27, 2021 at 8:16 PM
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