P1500 and P0125 need help guru

[rarest_90_DsM]

I have searched and no one has really solved the P1500 issue any help will be appreciated! As for the P0125 coolant temp sensor?

 

[cbr600teardrop]

what year is ## car

 

[rarest_90_DsM]

95 tsi

 

[cbr600teardrop]

p1500 is generator fr terminal circuit failure
and p1025 is excessive time to enter closed loop fuel control
i got that from mitchel ondemad 5

http://www.dsmtuners.com/forums/newbie-forum/2
http://www.dsmtuners.com/forums/newbie-forum/286922-code-p1500.html65093-getting-cel-code-p1500.htm
http://www.dsmtuners.com/forums/bolt-tech/234091-p1500-e-p0130-codes.htmll
http://www.dsmtuners.com/forums/newbie-forum/214980-infamous-p1500.html
http://www.dsmtuners.com/forums/newbie-forum/84790-what-do-these-cels-mean-p1400-p1500.html

 

[rarest_90_DsM]

p1500 is generator fr terminal circuit failure
and p1025 is excessive time to enter closed loop fuel control
i got that from mitchel ondemad 5

http://www.dsmtuners.com/forums/newbie-forum/2
http://www.dsmtuners.com/forums/newbie-forum/286922-code-p1500.html65093-getting-cel-code-p1500.htm
http://www.dsmtuners.com/forums/bolt-tech/234091-p1500-e-p0130-codes.htmll
http://www.dsmtuners.com/forums/newbie-forum/214980-infamous-p1500.html
http://www.dsmtuners.com/forums/newbie-forum/84790-what-do-these-cels-mean-p1400-p1500.html

thank you i will be checking the voltage output of the alt today. make sure its not to much voltage going back to the ecu.

 

[rarest_90_DsM]

finally got rid of the p1500 code new alternator. Still have the p0125 code along with a funky idle it starts idling normal then just before the cel comes on it idles up to 1000rpm then bout a mile down the road 1500rpm then cel and stays at 1500rpm any suggestions????? what would cause it to idle like this?

 

[1gengsx]

For the p0125 sounds like a bad o2. The front one. If you have a scanner or logger see it the voltage is switching. If its not needs a new one.

 

[rarest_90_DsM]

just put a new o2 on its one of the universal ones sorry should have mentioned that and im pretty sure i wired right but if you know off hand you could post it.

 

[rarest_90_DsM]

Put in a new thermostate yesterday and got a CEL on my way to work this morning this thing is making me angry what should be next to get replaced the coolant temp sensor is about the only thing left any help anyone have this problem before?

 

[rarest_90_DsM]

Bad brand new o2 just goes to show u