I just replaced my entire exhaust system this weekend and now I am getting Code 28 which says it has to do with the No. 2 O2 sensor. I wasn't having this issue prior to the new exhaust.
The only thing that I did that may have caused the problem was to clean off the old O2 sensors with brake cleaner prior to re-installing them into new Toyota downpipes.
Can I test the O2 sensor to see if it's working or am I just looking at buying new sensors?
This is on a 1994 with OBDI
The only thing that I did that may have caused the problem was to clean off the old O2 sensors with brake cleaner prior to re-installing them into new Toyota downpipes.
Can I test the O2 sensor to see if it's working or am I just looking at buying new sensors?
This is on a 1994 with OBDI