2004 Toyota Corolla DTC CODES

P0455 calls for EVAP large leak. Based on the freeze frame, I deduce that your VSV is faulty.

I checked with the dealer; they said the VSV isn't sold separately, only with the evap canister and it costs $280.....does that sound right to you?

P0455 calls for EVAP large leak. Based on the freeze frame, I deduce that your VSV is faulty.

$280 sounds about right for EVAP canister.

Is that true that you can't buy the VSV separately or do you know where one can be purchased?

I was just reading some Toyota TSBs and found a few interesting facts. SO, before you start replacing parts that may not be needed, please read these excerpts.

EG051-06
1. Using the Diagnostic Tester, check for Diagnostic Trouble Codes (DTCs). If P0440, P0441, P0442, P0446, and/or P0456 are present, inspect the fuel cap sealing surface on the Fuel Tank Filler Pipe Sub–assembly for corrosion.
ô€€€ If corrosion is present, proceed to step 2.
ô€€€ If NO corrosion is present, proceed to step 5.
2. Replace the Fuel Tank Filler Pipe Sub–assembly with the updated part.
3. Inspect the fuel cap O–ring for damage, for example, scratches or flaws on the
sealing surface. If damage is present, replace the fuel cap.
4. Run the EVAP Monitor to confirm the repair.
5. If another EVAP system fault is present, refer to TIS and diagnose the fault accordingly

For complete reading, please visit
matrixowners.com/tsb/T-EG006-05.pdf
matrixowners.com/tsb/T-EG051-06.pdf
You will need to add http:// in the front of the address.