I have been having problems throwin and o2 code, i threw code number 1 and thought that it was the 2nd o2 sensor, because i only have a test pipe in there, no cat...but my friend said that obd1 (running a p13 ecu) only read one o2 sensor, is this tru, did i buy an o2 sim for no reason, and what could be my problem>> bad o2 sensor????

 

true OBD1 only reads one o2 sensor OBD2 reads a second 02 behind the cat.

 

so if im throwing code #1 then what is my problem, bad o2 sensor??