Revs up then lunges

[Lozon]

Quite a mixed bag of codes. Just thinking out loud; is the gas cap off? These would point to TPS, O2 sensor, and evap system errors, so no help for pinning down a trans problem. How is the condition of the battery?

Battery is a month old.

[Lozon]

I'll put my money on this.
More Information for STANDARD MOTOR PRODUCTS APS255

That P2135 is fairly specific, and I'm assuming it was the first code read. Plus the symptoms match what a defective one of these sensors would probably do.

It would be nice if just a new O2 sensor took care of the rest of the codes, but the P0420 is ominous. Sometimes the sensor takes care of that code, and sometimes it doesn't.

I might go to the local pick a part and pick up a new/used pedal, as AutoZone wants a ton. It's worth trying. I just hope the pick a part one isn't bad too.