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17/09/2026 8:37 pm
Topic starter
Hey Scotty I have an 07 Avalon with 225k miles. Everything said, it runs great. I had code P2241 randomly about six months ago for bank 02 sensor 1 oxygen sensor. I replaced it. Three months later, the code came back. I reset the check engine codes to see if it would come back, and it didn't for another three months until now. I bought an aftermarket sensor and its possible that it failed and I need to buy an OEM sensor, but it costs quite a bit so I wanted to ask if there was anything else that could cause that code that I should check before buying another bank 02 sensor 1 oxygen sensor?
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17/09/2026 8:45 pm
it costs quite a bit
buy once, cry once as they say.
was anything else that could cause that code
For sure. Electrical problems can cause it.
