2012 error code 21 - Yamaha R6 Forum: YZF-R6 Forums
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 07-15-2019, 05:55 PM Thread Starter
My R6 eats me.
 
Join Date: Jul 2019
Posts: 5
2012 error code 21

I have a 2012 r6 and had it seating in my garage for a few months. Recently started to do a tune up because it turned it on and had check engine light with a 21 on the display before turning the engine over. I looked it up and I seeing it says temp sensor. When I turn the engine over it reads "LO" on temp. After 15 mins it still says "LO". Not sure what all this means so any help would be great. Thanks
Rainman87 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 07-16-2019, 05:37 AM
I eat my R6
 
Flyers28's Avatar
 
Join Date: Jul 2014
Location: Philly
Posts: 1,899
Bike: 07 Candy Red R6
Re: 2012 error code 21

It's all laid out in the service manual. You can download it from r6messagenet. The 2008 manual applies to your bike.
Flyers28 is offline  
post #3 of 7 (permalink) Old 07-16-2019, 12:15 PM Thread Starter
My R6 eats me.
 
Join Date: Jul 2019
Posts: 5
Cool thanks
Rainman87 is offline  
 
post #4 of 7 (permalink) Old 07-16-2019, 04:25 PM
I eat my R6
 
Join Date: Jan 2016
Posts: 2,739
Bike: 2015 R1
Garage
Re: 2012 error code 21

sounds like 1 of 3 things. it's a bad sensor or it's unplugged or the wiring is bad. with the manual and a multimeter you can test the sensor.
yamahacrazy is offline  
post #5 of 7 (permalink) Old 07-16-2019, 05:13 PM Thread Starter
My R6 eats me.
 
Join Date: Jul 2019
Posts: 5
Ok. It seems to be running a little warmer on the legs than normal. With that being out can it cause major issues? I.e. should I get it fixed before I do and riding? Obviously dont let it go but will it cause other issues if not fixed before riding around? Can it effect weither not the fan will kick on normally?
Rainman87 is offline  
post #6 of 7 (permalink) Old 07-17-2019, 04:04 PM
I eat my R6
 
Join Date: Jan 2016
Posts: 2,739
Bike: 2015 R1
Garage
Re: 2012 error code 21

yes it controls the fans. I wouldn't ride it. well not "it" specifically but the ecu needs to know how hot it is to turn the fans on.
yamahacrazy is offline  
post #7 of 7 (permalink) Old 07-17-2019, 06:01 PM Thread Starter
My R6 eats me.
 
Join Date: Jul 2019
Posts: 5
Ok. Cool. Thanks for the help. I'm glad you gave me info than "check the manual." I dont plan on riding it now that I know what's going on. Is it a difficult fix? I'm going to be doing some work to it. Gotta replace the plugs and air filter. So I figured while I'm at it I would do the work.
Rainman87 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha R6 Forum: YZF-R6 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome