I had pressurized fuel tank along with OBD2 code P0401 (Low EGR flow).
Gas tank vented out with some pressure when the gas cap was opened.
Replaced old OEM charcoal canister with VC120, cleared the code, did 3-4 drive cycles, and just passed Arizona emissions test.
p.s. Later - I don't think P0401 has anything to do with pressurized fuel tank and charcoal canister.
Why would it? Was just a coincidence. Still have intermittent P0401. Comes & goes.
A working canister to properly vent gas tank, but catch fuel vapor, is very important.
Gas tank vented out with some pressure when the gas cap was opened.
Replaced old OEM charcoal canister with VC120, cleared the code, did 3-4 drive cycles, and just passed Arizona emissions test.
p.s. Later - I don't think P0401 has anything to do with pressurized fuel tank and charcoal canister.
Why would it? Was just a coincidence. Still have intermittent P0401. Comes & goes.
A working canister to properly vent gas tank, but catch fuel vapor, is very important.
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