Check engine after exhaust change

Hey,
I have changed on my WR the stock exhaust with FMF POWER BOMB 4, and the check engine get on and off....
I know that its a know issue after changing the exhaust, is there any thing to do to solved it?

Thanks Nicolas

Did you unplug the EXUP servo motor?

YES
:)

That's the cause.
The missing servo motor is causing the warning light.

You can:

1) Mount and plug the servo motor back in (without the control cables in place).
2) Buy one of the servo eliminators on the market and plug that in.
3) Try the modification that uses a small resistor to do what the servo eliminator does.
4) Run it as-is.

Thanks :)

I've check and I have a servo eliminator, but still sometimes the check engine get on.
It might be that the servo device isn't working properly?
There is nothing written on it so I don't know what is his brand, should I buy another one and change it?
If yes what brand is the most recommended?


Thanks

Check the faultcode(s) to see whats actually throwing a code..

https://www.youtube.com/watch?v=HL6mbSmQnXQ

shamen wrote:

There is nothing written on it so I don't know what is his brand, should I buy another one and change it?
If yes what brand is the most recommended?

YZEtc wrote:

3) Try the modification that uses a small resistor to do what the servo eliminator does.

Solution (3) is a sticky right here on this site: https://wr250rforum.forumotion.com/t627-cheapest-diy-servo-bypass

It's simple, cheap, and it works; I used a 10k, 1/4W resistor.

Hey,
Finally I have checked the codes.
Those are the codes:
17
18
21
30
33
42

Also my battery shows 11.2 is that OK?
Thanks

11.2v is totaltally discharged, so no.
But it should recover fine when fully charged.

what about the other error codes?
are they ok?

Hi, perhaps this can help you:

http://www.cyclepedia.com/manuals/online/cpp-203/fuel-system/fail-safe-system/

See if you cant clear them.