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Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 12924
Experience:  Toyota Master Diagnostic
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2002 Toyota Solara code PO440 & PO446B

Customer Question

2002 Toyota Solara code PO440 & PO446B
Submitted: 5 years ago.
Category: Toyota
Expert:  Ase Master replied 5 years ago.
OK this is a code for the evap system the code is telling you there is a problem with the venting possibly a clog at the canister vent shut valve which is the most common the evap is covered 7 years or 100,000 miles under the federal emission warranty and still covered at the dealer
Expert:  Skyvisions replied 5 years ago.

With all due respect information above is not correct the warranty on this charcoal canister is only three years and 36,000 miles. The problem is not likely in the charcoal canister even. They do not get clogged. If you have both of these codes listed at the same time the 446 code may be a false code due to the evaporative system not passing the self test due to a leak which is the 440 code. The fuel filler neck is very common to corrode at the gas seal or if the gas cap is even slightly loose it will set both of these codes. The other problem that we see especially if you live in the Northeast where there is corrosion, the vacuum switching valve that is mounted to the charcoal canister goes bad. This will set the 446 code then set a false 440 code. If you need detailed information on how the system works let me know.

 

There also is a service bulletin addressing a problem with the close canister valve which is mounted to the air cleaner. This valve seat has a tendency to leak. This will set the two codes that you have plus it normally will pop a 441 code along with them.

 

RXXXXX XXXXX

Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 12924
Experience: Toyota Master Diagnostic
Skyvisions and 3 other Toyota Specialists are ready to help you

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