Malfunction Indicator Lamp Results: ON Diagnostic Trouble Code: PO133, O2-Sensor Circuit Slow Response Bank 1 Sensor...my question is, can I do the repair on my 2000 Ford Ranger? or should I go to a qualified technician?
Yes, you can replace O2 sensors yourself, make sure you use PB blast penetrating oil so they don't break of at the threads in the exhaust system.
〉 Answered on Apr 2nd, 2014 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
Depending on how rusted the O2 sensor is in the exhaust pipe, you should be able to change it yourself. If the sensor is rusted in pretty good, you will be much better off letting a qualified technician do it.
〉 Answered on Apr 2nd, 2014 by Helaine Kurot, Owner/Technician at 360 Automotive