i have a code 1 (o2 sensor) i already check my o2 sensors and still dont know whats wrong.. need help? please give me some advice about this problem...thanks i really appreciate all the help..

 

How did you check your O2 sensor? Just by looking at it?

 

well i went to carshop and they check it with the obd reader and they reset it then i went home then check all connections and it looks alright took it out and everything still dont know what up with it. do i need to replace the o2 sensor? i know there quite expensive...

 

What was the OBD2 code that was stored? Sensor lean? sensor circuit high?
sensor heater circuit malfunction?

 

it said code 1 meaning o2 sensor or wiring i forgot need to recheck that again...