1997 TOYOTA PREVIA HOW TO CHANGE O2 SENSOR 1 AND IT'S LOCATION

Question

my specific question is my toyota previa's code P0125, P0130, o2 sensor 1 needs replacement and location?

Answer 1

P0125 Insufficient coolant temperature for closed loop fuel control

P0130 02 sensor circuit malfucntion Bank 1 Sensor 1

You only have one code condition and that is P0130. P0125 mean the 02 sensor does not switch , Even though make sure you have a filled coolant system with no leaks. The location for Sensor 1 02 sensor is the 02 sensor closest to the engine. This would be the upstream 02 sensor or sensor 1.