P2238 2005 Rav4 Sport

Question

I have a persistent 2238 code that replacing the O2 sensor does not alleviate. I have reset the ecm, and cleared the codes multiple times. One thing I have noticed is that the motor accelerates in a choppy, uneven way once I erase the code, but then evens out and runs smoothly once the check engine light comes back on.

Answer 1

HI there

It's possible the issue is a poor running engine causing the code to appear. This could also be the result of a faulty ECM. Here is some more info on the code for you.

P2238 TOYOTA - A/F Sensor Bank 1 Short Circuit

Read more: https://www.autocodes.com/p2238_toyota.html