Yamaha F250

Summertop511

Summertop511

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I hooked up my Yamaha yds software to my 2005 F250 to read engine hours. Got that and everything is great but one issue.
It throws a random intermittent code 123 for throttle valve malfunction. Under engine monitor it goes into red for throttle position 1 at 40 volts.
Anyone have a service manual for a F250 or know where throttle position 1 is?
 
No thanks needed. Just replied to your PM , let us know how you make out.
 
Thanks mike.
If anyone needs a F250 service manual I’d love to pay it forward and email it to you. Such a great forum.
 
Can I make a guess that it is related to the TPS?
( although, the 40 volt reading has me stumped. Was it 40 millivolts or 4.0 volts?
 
seasick said:
Can I make a guess that it is related to the TPS?
( although, the 40 volt reading has me stumped. Was it 40 millivolts or 4.0 volts?
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I’m not gonna mess with something that’s not broke. Motor runs great. It resolved after restarting the laptop.
 
Summertop511 said:
I’m not gonna mess with something that’s not broke. Motor runs great. It resolved after restarting the laptop.
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That's pretty funny. Rebooting the laptop got rid of the error reported by the ECU? That's a new one for me:)
 
seasick said:
That's pretty funny. Rebooting the laptop got rid of the error reported by the ECU? That's a new one for me:)
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Well I’m using a 2018 MacBook Air with windows 10 running on boot camp with a usb to type c adapter. It’s very finicky to get working but it works for a good two minutes before having to restart the windows bootcamp
 
seasick said:
That's pretty funny. Rebooting the laptop got rid of the error reported by the ECU? That's a new one for me:)
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It’s weird. Never heard a hiccup out this motor. Hooked up yds just for hours and y not yanno. Randomly for a split second it will show code 123 but not recorded in faults history. In monitor it shows tps 1 go to 40 volts for a split second. I have a video. Plus on the accelerator 1 and 2. Literally for a millisecond and idk y mess with something that’s not broken. I put almost 200 hours on it since I bought it and never noticed anything wrong. It doesn’t do it now so idk maybe it was from restart or just the time frame I had it hooked up again it didn’t do it.
 
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