2014 dl 650 FL code - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL650A - 2012-2016 DL650A 2012-2016 (L2-L6)

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post #1 of 12 Old 06-22-2019, 01:34 PM Thread Starter
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2014 dl 650 FL code

So i followed the instructions on dealer mode and got a c44 02 sensor code. Can someone please help me locate the offending sensor?
thanks

2014 KLR650,2014 Polaris Sportsman 800EFI,2014 Vstrom650 adventure,2017 Subaru Outback,2002 F250 SD 4x4 7.3l Diesel.
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post #2 of 12 Old 06-22-2019, 01:52 PM
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Moooboy, your C44 code applies to #2 02 sensor, which is the rear cylinder. Be aware that in diagnosis you have the ECM, wiring between the 02 and the the ECM, and the 02 itself as possible culprits.
This code applies to both sensor and the sensor heater operation.
An 02 is a "camera" for the ECM for adjustment to air-fuel ratio via injection duration. ANYTHING that causes the camera to give a signal that the ECM doesnt recognize can set an 02 code. A vacuum leak or dirty injector are just 2 examples.
An item that would affect both cylinders, such as low fuel pump pressure wont apply as you have only a code for 1 cylinder.
More than likely it's just a bad 02 sensor, but the proof will be in its replacement unless you want to go through all the diagnostic steps for that code.
"Get a code, get a part" doesnt always work.

Last edited by MAZ4ME; 06-22-2019 at 01:58 PM.
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post #3 of 12 Old 06-22-2019, 02:32 PM Thread Starter
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Quote:
Originally Posted by MAZ4ME View Post
Moooboy, your C44 code applies to #2 02 sensor, which is the rear cylinder. Be aware that in diagnosis you have the ECM, wiring between the 02 and the the ECM, and the 02 itself as possible culprits.
This code applies to both sensor and the sensor heater operation.
An 02 is a "camera" for the ECM for adjustment to air-fuel ratio via injection duration. ANYTHING that causes the camera to give a signal that the ECM doesnt recognize can set an 02 code. A vacuum leak or dirty injector are just 2 examples.
An item that would affect both cylinders, such as low fuel pump pressure wont apply as you have only a code for 1 cylinder.
More than likely it's just a bad 02 sensor, but the proof will be in its replacement unless you want to go through all the diagnostic steps for that code.
"Get a code, get a part" doesnt always work.
Thanks for the help. Where can i find the diagnostic steps for the 02 code?

2014 KLR650,2014 Polaris Sportsman 800EFI,2014 Vstrom650 adventure,2017 Subaru Outback,2002 F250 SD 4x4 7.3l Diesel.
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post #4 of 12 Old 06-22-2019, 03:05 PM
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The factory service manual is your best bet. I used my '14 DL1000 manual for your codes. The diagnostic steps, like most electrical/electronic testing requires a volt/ohmmeter. I also have on hand a 12V automotive test lamp, mini-alligator-clamp jumper cables, and that's basically it.
The goal is to repair/replace just what's necessary without spending time, effort, and money on unnecessary parts and procedures.
I COULD send you screenshots of the diagnostic pages if'n you like.
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post #5 of 12 Old 06-22-2019, 03:14 PM Thread Starter
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Quote:
Originally Posted by MAZ4ME View Post
The factory service manual is your best bet. I used my '14 DL1000 manual for your codes. The diagnostic steps, like most electrical/electronic testing requires a volt/ohmmeter. I also have on hand a 12V automotive test lamp, mini-alligator-clamp jumper cables, and that's basically it.
The goal is to repair/replace just what's necessary without spending time, effort, and money on unnecessary parts and procedures.
I COULD send you screenshots of the diagnostic pages if'n you like.
THe bummer is this bike only have a few hundreds miles on it since new. I have too many toys and not enough time. But, i want to get this fixed. its already had a new top end from suzuki for the cam lube issue and the stator recall.
Please post the screenshots.
thanks You can also PM them to me if you wish.
thanks again.

2014 KLR650,2014 Polaris Sportsman 800EFI,2014 Vstrom650 adventure,2017 Subaru Outback,2002 F250 SD 4x4 7.3l Diesel.
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post #6 of 12 Old 06-22-2019, 04:44 PM
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post #7 of 12 Old 06-22-2019, 07:16 PM
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Check the connector or get a used 02 sensor off of flea bay for cheap..

New OEM ones are $$$

2012 Suzuki DL650AL2, over 45k miles already!
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post #8 of 12 Old 06-22-2019, 08:40 PM
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Another method...read the manufacturer and part number on the suspected sensor itself, see if it transposes over to a NTN brand sensor and if so order one from Rock Auto like I did for my old Mazda Tribute for $27. An"If", to be sure.
But I'd rather diagnose and know what the failed component is or where a circuit problem is before I spend any money.

Last edited by MAZ4ME; 06-23-2019 at 01:46 PM.
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post #9 of 12 Old 06-22-2019, 09:28 PM
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I wasn't aware the 2nd gen 650 had two oxygen sensors. I can only see one on my 2016, in the exhaust just behind the right front footpeg. Where is the other?

Edit. Just checked the book, the 650 doesn't show a code 64. Maybe dual O2 sensors unique to the 1000?
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Last edited by locoblanco; 06-22-2019 at 09:39 PM.
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post #10 of 12 Old 06-22-2019, 09:39 PM
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Loco, you are correct. The OP where the offending sensor is, whI took as meaning which of 2., so I used my '14 1000 service manual, which has a sensor for each cylinder. Which reaffirms my theory on assumptions.
To the OP: The 02 sensor is located near the junction of the front and rear cylinder headpipes.
I apologize for my mistake.
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