JRabs

Help, i have a check engine light diagnostic i need prescribed, the diagnostic reads codes P1155 02 sensor overheat and P1025 insufficient coolent temp. I believe i need to replace both the coolent temp senor and the 02 senor but im not sure which one. The location is Bank 1 Sensor 2 and im not sure which one that is, in front of the Cat converter, behind, or on the exhaust etc? rather than buying many sensors if anyone has any previous knowledge or expereince on the location, or codes themselves, all help is GREATLY Appreciated. Thank you.

Lexmex

P1155 should actually be Bank 2 Sensor 1, and that's the air/fuel sensor readily visible when you open the hood and look at between the radiator and the front of the engine (right off the exhaust manifold).

Forget the coolant temp sensor. Sometimes when I'd go down to the Florida Keys and then I'd wake up the next morning on the return trip I'd get and a/f sensor code along with the P0125 code you had. I'd clear the code and then get it every so often. The code eventually hasn't shown itself since I did a coolant changeout. However, I'd reset the code and see if it comes back for the time being.

JRabs

thank you lexmex for the clarification, yeah i figured on waiting on the coolant senor, however i need it cleared to pass inspection, once i ge the 02 sensor replaces i will see what comes up

Lexmex

Check your coolant, not just level, but color and consistency in the coolant reservoir, but if you haven't done it in a while, I'd change it out.