P0420 P2238 P2241 P0420 P0430 '04 Toyota Sienna 150K miles

Question

My '04 Toyota Sienna with 150K miles tripped a check engine light.

Got codes read at auto parts place:

P0420 P2238 P2241 P0420 P0430 (they said the P0420 has triggered several times)

I note that the engine light came on just after a big dip in winter temperatures (dropped to 13 degrees).

Here are my questions:

1. Anyone know what the combination of these codes could means?
2. What is the best / cheapest fix option?
3. Is it safe to drive with these codes?

Thanks!

Answer 1

All the codes are related to emission systems, like oxygen sensors or catalytic converter.

I would try to reset them and see if they come back, its possible it is caused by very cold temp.

if you dont have any OBD-II reader to reset the code, you can disconnect the negative terminal on the battery for an hour or so.