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Neal
Neal, Chevy Mechanic
Category: Chevy
Satisfied Customers: 8349
Experience:  Shop Owner and Mechanic on multiple makes.
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2001 Chev that is throwing code P0094 and no leaks of any

Customer Question

2001 Chev that is throwing code P0094 and no leaks of any kind.
Submitted: 1 year ago.
Category: Chevy
Expert:  Neal replied 1 year ago.

That actually refers to an EVAP leak. That code can be caused by a small leak like a pinhole in a hose, a gas cap with a small leak. Make sure the gas cap is not loose and reset the code. If it comes back you might try another gas cap next. If the issue continues it can be very hard to find. A smoke test is usually required at that point. This is a machine that pumps smoke into the evap system to help find the leak.