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john, The Car Guy
Category: Toyota
Satisfied Customers: 15038
Experience:  ase tech over 15 years in the field
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I have a 2002 Toyota Solara with a 3.0 V6. The check engine

Customer Question

I have a 2002 Toyota Solara with a 3.0 V6. The check engine light is on and a friend used a code reader and got a P1155 code. All I know is that it is and
JA: Does the light stay on, or does it blink?
Customer: It stays on.
JA: Are you fixing your Solara yourself? What have you tried so far?
Customer: I am trying to fix it myself but I have not tried anything yet. I am trying to figure out were to start.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No.
Submitted: 1 month ago.
Category: Toyota
Expert:  john replied 1 month ago.

The code refers to Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2). 1 is firewall side and sensor 2 is the downstream o2 so the one in the exhaust pipe not the basically a fancy term for a oxygen sensor

Expert:  john replied 1 month ago.

here is a diagram