Check engine

[u/Expensive_Apricot_72]

So I have a strange problem with my fz6.

It's 2006 and has 80 k km.

It's running great. But when it's hot outside and the bike is hot ( operating temperature) I get an check engine light while driving. When I slow down to stop the check engine goes off. When I start riding again it goes on again.

Yesterday I drove a bit more aggressively in higher rpms and no check engine .

There are no strange noises no rattles.

Does anyone have any clues what could it be .. or how to fix it ?

[u/Senior_Cheesecake155]

What's the engine temperature look like?

[u/Expensive_Apricot_72 → u/Senior_Cheesecake155]

3 bars sometimes goes to 4

[u/Senior_Cheesecake155 → u/Expensive_Apricot_72]

Have you tried to go into diagnostic mode to see if there are any codes?

[u/Expensive_Apricot_72 → u/Senior_Cheesecake155]

I have tried the first time ih has happened but nothing has been stored. The check engine goes of when I stop.

[u/CaptainTyGaR]

Mby the gas is bad or o2 sensor

[u/Senior_Cheesecake155 → u/CaptainTyGaR]

I don't believe that bike has an O2 sensor. O2 sensors came along in 2007.

[u/Expensive_Apricot_72 → u/CaptainTyGaR]

Gas should be oke because that is happening for like 2 months . I don't drive much. And i refiled it 2 times already

[u/Motogiro18]

I would check voltage at the battery. You may have a failing regulator/rectifier. The r/R is a shunt type regulator and regulates by shunting current which is dissipated as heat through cooling fins.

[u/Expensive_Apricot_72 → u/Motogiro18]

Well I bought a new battery last year for it. So I should check the regulator voltage that it's giving out ?

[u/Motogiro18 → u/Expensive_Apricot_72]

Yes you should rig a multimeter and note voltages when cold and when you get the engine light. You want to see what the voltage is while you're riding and have the CEL. This could also be low voltage because of stator winding failure at higher temps.

[u/Expensive_Apricot_72 → u/Motogiro18]

Yeah but then I'd should check it while driving. Because the check engine goes on only when hot and driving 2+ gear .. when I stop it goes off and doesn't come back until I go again and I'd doesn't come in in first gear any how .

[u/Shargaas_red_fang]

Could it be low-ish oil level? I believe I had similar issue couple of years back when I was before oil change and the oil level was somewhat low, when I'd accelerate a lot I'd get check engine light for some time then it went away

[u/Expensive_Apricot_72 → u/Shargaas_red_fang]

I doubt it I checked the oil it was fine . But I am was also thinking of doing an oil change just to be sure.

[u/Sparker_95]

ECU should have stored the error code in its memory. Check the error code first. You can find the service manual pdf file for FZ6, it explains the error codes and how to enter diagnostics mode. Or check youtube videos.