I found this in another post, search button is a nice featureWell, you'll basically have to "probably" replace your TPS(Throttle Position Sensor). Your ECM is "seeing" a TPS voltage that is below 0.2 volts, this is causing the code 22.
Apparently the ONLY way to check it is with a Scan Tool. I thought you would have been able to check it with a Digital MultiMeter, but apparently not!?
Anyways, that part # for the TPS is:
It should only cost about $40-45.