p1135 and p1155

[brinkley]

Hey guys, I've been an MR2 guy for awhile now, but am working with an 01 avalon at the moment. I had p0325 and replaced my knock sensor, in doing so I believe my buddy mismatched a hose or two and shot some coolant through the engine. I believe I have everything correct now, however, p1135 and p1155 have come on and are staying on despite multiple attempts to erase and then drive the car, erase drive the car, erase drive the car, I was thinking at first it would be only natural for them to come on but now I worry that they are done for. What do you guys think?
Also I am seriously confused about do I have air/fuel sensors or o2 sensors and which ones do these codes indicate are the problems. Down stream/upstream front or back? ANY help is greatly appreciated I bought the car out of inspection and cannot get tagged until these codes go away for good

P1135

Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1)

P1155

Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2)

[toyomoho]

Bank 1 is the cylinder head closest to the firewall. Sensor 1 is the first sensor on the exhaust system coming from the cylinder head. The other cylinder head would also have its own sensor.

The car may have 3 (or maybe 4) sensors.

[avalonshoe]

just changed my b1s1 sensor, its a semi-pain