i had all my 02 sensors replaced in december plus all new coils,cat,plugs,wires and ignition module, now im comin up with a SES code of p-0155 do u think that the O2 sensor has already gone out?? if so what could be causing it??thx for any help!

 

DTC P0155 HO2S Heater Performance Bank 2 Sensor 1

Try changing that sensor 1st,

 

isnt the "sensor" the o2?

 

i think thats sensor thats under the dash, part of the heater core/ blower motor. I'll check in my haynes manual tonight when I get home.

I am assuming when you said you changed all the O2 sensors, you mean the sensors for the exhaust system. Theres about 4 million sensors on the whole car.

 

check the passenger side front 02..


most times its a bad 02 that will set the code. check for a good connection and no water in the connector