code p0125

[White00SR5]

you are correct most likely a wiring issue.

Thanks for the help. Ill get on trying to track that down. Appreciate the ideas and tips.

 

[brillo_76]

Keep us posted on what you find. At least you got it narrowed down to the wiring and or harness possible issue.

Sent from my SM-A505U using Tapatalk

 

[Bad Luck]

Here's a 2000 electrical wiring diagram: Dropbox - 2000 4Runner Electrical Wiring Diagram (EWD383U) - Printable - Simplify your life Might come in handy for your circuit testing.

 

[White00SR5]

Thanks guys. Ill let ya know what I find. Hopefully in the next day or two.

 

[White00SR5]

Well good news. Found a weak connection between a wire and the o2 connector on the truck side of the connector. I butt connected it to the wire on the o2 sensor side as a test. All looks to be functioning properly on the data on my obd2.

Im off to work for a week so redoing the connection inside the connector will have to wait. A butt connector and some electrical tape to keep it dry will work for 1 commute. Thanks for the help guys. Really appreciate it!!