2001 Honda Passport with the reduced power light and check engine light on!

yes the transmistion

Get the codes read again. The numbers may have changed since you installed new parts.

You are in "limp mode" to protect the engine. it is intentional on the car's part... get to a transmission shop like now "reduced power" does not mean it's not putting out enough, it means the computer has intentionally reduced power

I checked the codes again and they are the same codes that it initially put out. I was told by a mechanic that it was faulty wiring, but checked all the wiring and no problem. Was told by another that it was the TPS, but replaced the TPS and still nothing. Was told by another mechanic that I may need a throttle body. Do you think that would be it? I would just hate to replace it and spend all that money to have it not be the problem. Seeing as how I've done everything told and still hasn't worked.

Alternator or battery. Mine is doing same.

I have a 2001 Honda Passport and both my reduced power and check engine lights came on....any guesses?!?....to late!! It was my oil!! I was low on oil!!. So check your fluids before you do anything!! Good luck to all!!