Hello,
I have a 2001 Toyota Echo. I took it to the smog test station and it failed the test. The guy said it failed because the check engine light is on and the computer showed this error: P0141 O2 Sensor Heater Fault (Bank 1 Sensor 2) Of course he only told me this after he charged me for the test.
In retrospect, it was very foolish on my part to take the car with a check engine light on.
Having said that this is what I plan on doing:
- I think this is the Oxygen sensor that is after the Catalitic converter so I plan first on taking it out and cleaning it. I also want to check the Ohms.
- Then I will put it back on and reset the computer by pulling the EFI Fuse B out.
- If the light is out I will drive the car for a while to see if this fixed the problem.
- If this does not work I will buy a new sensor and replace it.
Questions I have:
1.- Where is the EFI Fuse B?
2.- What should the Ohms be if the sensor is good?
3.- I heard about cleaning the Mass Airflow Sensor, is this a good idea?
I think this is where the O2 sensors are located:
Toyota Questions & Auto Repair Information > Toyota Echo Questions > hard replace rear oxygen sensor - Just Answer!
Thanks