Q: Evap valve

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ODB fault indicates "probable bad evap valve". Can you estimate time/cost for repair? Is it worth the time/money to diagnose the specific problem, or just replace purge, vent, and canister all at once?

My car has 85000 miles.
My car has an automatic transmission.

Hi There, As you know, any number of things within the EVAP system can cause these codes to be triggered. The most common problem with the vent valve is when it sticks open or doesn’t close. This creates an EVAP system leak and triggers the Check Engine or Service Engine Soon light. If you are limited on time and money, you may want to start with checking the smaller easier things like the gas cap and potentially the purge valve solenoid as these are a bit cheaper to replace. If these check out fine, it may be time to have it diagnosed by a qualified mechanic.

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