FI Code C44 - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL650A - 2012-2016 DL650A 2012-2016 (L2-L6)

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post #1 of 22 Old 03-19-2018, 10:39 AM Thread Starter
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FI Code C44

Good morning Everyone,

I had some work done on my bike recently (checked valve clearance, and lowering ride height), and when I turned it on today (first time since repairs) I got a FI light. I learned about dealer mode, and got an error code C44 which is for the O2 sensor. Does anyone have any idea what could have happened? My guess is that a connection got loose when work was being done on it. Can anyone help me with the location of the sensor and what I can do to start troubleshooting? Thanks in advance!

Edit* My bike is a 2013 V-Strom 650.

Last edited by Kyrios; 03-19-2018 at 10:42 AM.
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post #2 of 22 Old 03-19-2018, 11:37 AM
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You need to remove the seat and the right side frame cover. The connector looks to be behind the rear brake fluid reservior. The sensor itself is on the pipe between the header and the muffler. You can follow the cable from there.

Can't post copies of stuff from the service manual for copyright reasons. Sorry.

Last edited by Bikehigh; 03-19-2018 at 11:39 AM.
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post #3 of 22 Old 03-20-2018, 10:20 AM Thread Starter
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Thanks for the help! I remember reading somewhere that it's usually cheaper to source a used O2 sensor from another Suzuki bike that the owners tend to use aftermarket exhausts. Do you have any idea of what that refers to?

I'm about 80% it was a old post from this forum, and they mentioned they got it for around $20 (instead of the $200 a new OEM one costs).

Edit* I found this aftermarket sensor, and I wanted to know if anyone had any experience with it.

Walker Products 932-14066 Oxygen Sensor

Last edited by Kyrios; 03-20-2018 at 10:51 AM.
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post #4 of 22 Old 03-20-2018, 05:49 PM
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My aftermarket exhaust uses the 02 sensor. I think your ECM requires it.
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post #5 of 22 Old 07-16-2018, 09:01 PM
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I'll piggyback on this thread as I have the same issue with a 2013 I just bought.

Do we know that an o2 sensor from another Suzuki bike like a GSXR will work?

Amazon says there is a Walker Products O2 sensor that will work...but when I went to the Walker website it didn't even list Suzuki as an option.
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post #6 of 22 Old 07-17-2018, 09:38 AM
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I would say you missed a connection someplace. Or pinched something to ground. L2 diagram I believe. See attached and admin please advise if this is OK to post pic.

kfh000
Attached Images
File Type: jpg O2wiring.jpg (156.7 KB, 13 views)
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Last edited by kfh000; 07-17-2018 at 09:42 AM. Reason: added pinch and l2 info
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post #7 of 22 Old 07-17-2018, 09:56 AM
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Voila!!! I hope it's not the sensor at that mileage but...

On Ebay they reference V-Stroms in the Walker parts but a bit pricier. $125 Not cheap but better than $200.

Oxygen Sensor-Othermotive O2 fits 12-16 Suzuki DL650A V-Strom ABS

Walker Products 932-14006


https://www.ebay.com/p/Oxygen-Sensor...4006/227629056

https://www.amazon.com/Walker-Produc.../dp/B01DTENVWC

Top left confirms fit...

2014 Suzuki V-Strom 1000 ABS (Candy Daring Red)
2017 Kawasaki Versys-X 300 ABS (Graphite Grey)
2013 Suzuki V-Strom 650 ABS Adventure (sold)

Last edited by SECoda; 07-17-2018 at 10:38 AM.
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post #8 of 22 Old 07-17-2018, 10:44 AM
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Quote:
Originally Posted by kfh000 View Post
I would say you missed a connection someplace. Or pinched something to ground. L2 diagram I believe. See attached and admin please advise if this is OK to post pic.

kfh000
Thank you for that. I disconnected the o2 sensor from the bike and tried to do this. Leads on the white wire heading to ground and on the black wire (HO2s)

Cold, I was getting 0.0V. After running for 7-10 minutes or so and the exhaust getting hot, I was getting 25-30mV. No where near the >2.5V that picture mentions. I thought most o2 sensors maxed out at 1V?

Hopefully I'm doing the test right and it indicates an issue with the sensor and not something deeper.

Last edited by FarmTruck; 07-17-2018 at 10:48 AM.
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post #9 of 22 Old 07-17-2018, 10:47 AM
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Quote:
Originally Posted by SECoda View Post
Voila!!! I hope it's not the sensor at that mileage but...

On Ebay they reference V-Stroms in the Walker parts but a bit pricier. $125 Not cheap but better than $200.

Oxygen Sensor-Othermotive O2 fits 12-16 Suzuki DL650A V-Strom ABS

Walker Products 932-14006


https://www.ebay.com/p/Oxygen-Sensor...4006/227629056

https://www.amazon.com/Walker-Produc.../dp/B01DTENVWC

Top left confirms fit...
Thank you. The only thing is that I tried confirming the fit on the walker webpage and it doesn't even list that they have an o2 sensor for a 2013 Suzuki motorcycle, so I'm not sure what that means. I saw o'reilly auto carried it, and they list it as a sensor for a Suzuki SX4, which is interesting.
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post #10 of 22 Old 07-17-2018, 10:53 AM
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Does it approach 1V at higher rpm's? I thought it was usually .1 to 1V also depending on O2 but never tested a V-Strom. If in that range it sounds like a connection or other problem. I would think if it is going above 0.1V (100 mv) it is working. 25-30 mv max might mean a problem. Trying revving it a bit for a while.

Quote:
Originally Posted by FarmTruck View Post
Thank you for that. I disconnected the o2 sensor from the bike and tried to do this. Leads on the white wire heading to ground and on the black wire (HO2s)

Cold, I was getting 0.0V. After running for 7-10 minutes or so and the exhaust getting hot, I was getting 25-30mV. No where near the >2.5V that picture mentions. I thought most o2 sensors maxed out at 1V?

Hopefully I'm doing the test right and it indicates an issue with the sensor and not something deeper.

2014 Suzuki V-Strom 1000 ABS (Candy Daring Red)
2017 Kawasaki Versys-X 300 ABS (Graphite Grey)
2013 Suzuki V-Strom 650 ABS Adventure (sold)

Last edited by SECoda; 07-17-2018 at 11:02 AM.
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