CODE 1 pissing me off

[YZ125rider21]

I cant seem to get rid of code 1...it didnt start this till i retarded timing to et ready to smog it and I went out and got a new o2 cause under warranty placed it in and reseted the ecu twice now and still comes on after I go down the road but everything seems to run good...

[4G4D Store]

Have you changed the header recently? Have you put your timing back to stock spec to see if it goes away??

[bambam89lx]

Originally Posted by YZ125rider21

I cant seem to get rid of code 1...it didnt start this till i retarded timing to et ready to smog it and I went out and got a new o2 cause under warranty placed it in and reseted the ecu twice now and still comes on after I go down the road but everything seems to run good...

It doesn't necessarily mean the sensor is bad. Did you stop to think that maybe the wire is broken? Did you test for continuity from the ecu to the oxygen sensor? Did you test the o2's voltage?

[YZ125rider21]

hey bam long time no talk to. But ya I tried with a voltage meter and couldnt figure it out it was jump all over the place when I had it on ohms...if you can go into detail how to tet it it would be nice...A friend of mine said just run a new wire from ecu striaght to o2 and that will solve the problem cause i just gotanother o2 but have not put it in until I here how to test them...please respond back bam thanks

[bambam89lx]

Originally Posted by YZ125rider21

hey bam long time no talk to. But ya I tried with a voltage meter and couldnt figure it out it was jump all over the place when I had it on ohms...if you can go into detail how to tet it it would be nice...A friend of mine said just run a new wire from ecu striaght to o2 and that will solve the problem cause i just gotanother o2 but have not put it in until I here how to test them...please respond back bam thanks

You don't want to test it in ohms, that's resistance. You want to test it in volts, which is voltage.
You should also use a multimeter to test the wire for continuity (no breaks). I wouldn't run a new wire, i would try to fix the current wire. The 02 wire is a sensitive wire, and any modification to it can throw off the voltage. Most of the wire is shielded and grounded as well to block out unwanted RF interference (stereo/ignition related).

Hope this helps.

[FrodoGT]

Yeah hes right, if you mess with thatwire you can have some real issues...like how occasionally my AF guage will pulse with the bass on the stereo lol..

[turtlecrxsi]

I've got the same damn problem. I figured the wire came loose so I redid the connection at the sensor (at collector of header) and at original wire. Still having issues so I may pick up a new 02 sensor for $17 and check the wire for continuity throughout. It was fine for the longest time but now it's back to piss me off.

[YZ125rider21]

Originally Posted by bambam89lx

You don't want to test it in ohms, that's resistance. You want to test it in volts, which is voltage.
You should also use a multimeter to test the wire for continuity (no breaks). I wouldn't run a new wire, i would try to fix the current wire. The 02 wire is a sensitive wire, and any modification to it can throw off the voltage. Most of the wire is shielded and grounded as well to block out unwanted RF interference (stereo/ignition related).

Hope this helps.

I noticed that it was shielded but I did a new wire for now until the code goes off I just want to pass smog lol so if it works with new wire for now then I let it be and check whats wrong with the real wire in harness after smog

[bambam89lx]

Originally Posted by YZ125rider21

I noticed that it was shielded but I did a new wire for now until the code goes off I just want to pass smog lol so if it works with new wire for now then I let it be and check whats wrong with the real wire in harness after smog

well, places like radioshack actually sell shielded wire. So, you can use that to run a new wire in the future. Just make sure you know how to ground the shield.

[YZ125rider21]

how do you ground the wire cause I know it raps around the other wire...