[Moss500LMT]

I have a 2002 Toyota Camry SE. The check engine light is on and I just got the codes run at the parts store.

The codes are:
420 - catalyst system threshold bank 1
440 - evaporative emission system malfunction
441 - Evap. emission incorrect purge flow
446 - evaporative emission control system pressure/system switch

Does anyone have any ideas on what this might mean and how much it may cost to fix?

 

[SFCamry]

Check your fuel cap to see if it is sealed correctly: check that gasket on it, etc. 0420 code recommends that if you get other codes with it that you correct those first, and 0440/0441 suggest fuel cap issues (among other things). That is an easy thing to check or replace (get new cap from AutoZone or similar).

 

[GORBY95]

Suggest starting with gas cap check/change... there is a gasket and a valve that can be bad... suggest dealer part, if needed.

 

[billybob50]

Walmart had my gas cap $6. Suggest after installing it ether pull the ECU fuse or disconnect the battery for 30 seconds to clear any old codes.

 

[cj1]

Very ballpark figure:

If you have to replace cat could be up to $1000.00 depending on labor/parts cost.
The other codes total could be up to $500.00.

Going to a shop budget $2000.00 max. Lots of ways to save if you can DIY.

Does car run normal outside of error codes?