Hartness5265

Good Evening Fellow enthusiast !


I had the CEL come on last night, and plug my OBDII tool in this afternoon. I found a P0139, Sensor Circuit Slow Response Bank 1 Sensor 2.

From my research it appears to be rear sensor on driver side.

Curious if someone could confirm?

Also decent place to find replacement part?

Is this a DIY project, or should I be preparing for a large repair bill?


Thank you everyone!!


Cheers!