Question

What could be the reason for the check engine light being on in a 1998 Chevrolet Malibu with a 3.1 engine?

Answer 1

po446 is a blocked evap canister vent. possible cuases are: evap vent solenoid stuck closed, a plugged kinked or pinched vent hose,shorted evap vent solenoid driver circuit,or a pluged evap canister. any one of the above need to be addressed to fix the problem. remember, it is a process of elimination.

Answer 2

Yhe po446 is a code for your emissions system.I believe thats a leak in the system.Not critical.Maybe gas cap?

Answer 3

usually 2-3 things, your second answerer may well be right, on mine it's the oil pump going..