Hi, I have a 2003 CBR954RR and I was on a 600 mile ride. About 3/4 of the way through the ride, the FI light came on. It put out three different codes. 21 (O2 sensor), 23 (O2 sensor heater), 35 (Faulty EGCV and air intake valve servo motor). Because all three codes came up at the same time I am thinking it is something else as it is unlikely all three components would malfunction at the some time. What do you guys think? Am I thinking about this too much, and just replace all three components, or find out what else could be causing all three to fail. I would apreciate any ideas you guys might have. Thanks!

 

In case you dont get a lot of replies immediatly, it has been seen, and im thinking / researching ideas. Will try and respond with a helpful answer. Just dont want you to think your being ignored.

 

oh ok, thanks for your help! Oh, I have not added or changed anything on the bike recently. I put on a new slip on about 4000 miles ago, and have not had any trouble until now. It is the Yana Shiki.

 

OK well i guess there are a couple possibilities anyhow, but its gonna require you to do some testing. First and foremost download the service manual if you dont already have it.........http://www.stephygee.com/954RRmanual.zip

OK it could be the pcm failed, but unlikely

could be a mouse, somehow burnt, or something a batch of wiring

Most likely though you are going to have to test some theories. If you have a volt meter and some knowhow the manual can walk you thru test procedures. For the 02 sensors issues go to section 5 page 40-48 and follow the test insructions.

For the servo motor that a bit easier, you can disconnect it and hook it to the battery to test if it works. Follow instructions secton 5 pages 51-53.

Sorry i cant help ya more at the moment, but your gonna have to do a bit of digging.

 

Ya I am in the process of doing the tests. I have the manual. Thanks a lot for all your help, and time you spent. I will let you know what I find when I do find something. Thanks again, Scott

 

NP man, thats why we are here. If you stumble on anything else feel free to ask. Or if you find the solution post it up, always curious to learn more.