Generac XT8000EFI fault code

Portable standby generator troubleshooting and repair questions. (Gasoline, diesel, propane, natural gas)
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ursis
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Need help with a Generac XT8000efi generator. I had it running a little over a month ago it shut down normally. Now this morning it is giving me a Po123 fault code (per Generac). The fault light flashed ten time quickly and then repeats, this particular code is not covered in the owners manual that is why I called Generac tech support, per them it is a "TPS high, open circuit 5v, 12v short circuit.

It will not start with electric start or manual pull start.

Any help would much appreciated.
Chris
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I don't have much experience with them, but there is a diagnostic manual available for them which does list all the codes and test procedures for it. I don't see one for a 10 flash code though, but there are a bunch of them listed. Looks like 8 flashes is the highest listed in there. The TPS code appears to just be a constant series of: on for .25 sec, off for .5, on for .25, etc. What's strange is the diag manual says a TPS isn't used on a portable unit... :ahh:

See here: https://shop.gentekpower.com/products/g ... tic-manual
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grsthegreat
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what is TPS. never heard of it
Chris
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Throttle Position Sensor. Used on fuel injected (and even the Bosch actuator gens) to monitor the position of the throttle plate for feedback.
Generac tech for over 12 years. I'm here to help!
"The only source of knowledge is experience" -Albert Einstein
Looking for Generac parts? Gentek Power offers the full line of Generac replacement parts! Shop Gentek Power Generac Parts
A list of my favorite Generator & Electrical Tools! https://www.amazon.com/shop/gentek_power
grsthegreat
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Oh, ok thanks.
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