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Old 11-28-2012, 11:01 AM   #1
muddymatt OP
Gnarly Adventurer
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Joined: Feb 2009
Oddometer: 152
2011 KTM 690R Error Code 90

After a couple of months lay up I started my KTM 690 up with no issues and let it slowly warm up. I then took it on a test ride but only got 100m before it started over revving on tickover and misfiring.

Back in the garage I noticed the FI light blinking and sure enough every time I switch it on it comes up with a code 90 with is Throttle position circuit failure.

The bike will start but wants to over rev holding the throttle shut against the stop alleviates this a bit.

Doesn't seem to be any caught cable and throttle operates fine.

Should I get it checked out on a diagnostic machine at a dealership or attempt to strip down where the cables go into the throttle position sensor on the right hand side of the FI unit.

All opinions gratefully received.

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Old 11-28-2012, 06:59 PM   #2
Dusty and Thirsty
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Joined: Oct 2007
Location: Sierra Vista, AZ
Oddometer: 1,326

You will probably get a better response over in Thumpers. There are some 690 threads in there. I would help you if I could but I have not worked on a 690, but it sounds like your Throttle Position Sensor may be toast.
Rob Swartzwelder, Southern AZ
I'm not real fast, but I do have a dog named Dakar!
97 M900, 07 G650 XChallenge,11 KTM 990 ADV R
2011 North up the CDR
Sierra Vista AZ to Paonia CO and Back through Moab UT

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