1996 Toyota 4runner 3.4L error code p0133

My car would begin to accelerate in a jerking motion and the "check engine" light would come on. A scan showed code P 1003 (intake air temperature sensor 1 circuit high). After changing the air temperature sensor the "check engine" light came on again; this time a scan showed code P 2195 (O2 sensor (oxygen sensor) signal biased/stuck lean bank 1 sensor 1).
The car continues to accelerate in jerks, as though there is not enough fuel. Would you happen to know what this could be?
Thanks

SAE J2012 Revised DEC2007 lists Diagnostic Test Code (DTC) P0133 as "O2 Sensor Circuit Slow Response Bank 1 Sensor 1"

This code basically means that the upstream oxygen sensor on bank one of your engine is not responding as quickly as it should to changes in oxygen leavels in the exhaust.

The usual causes of this is an oxygen sensor that is just plain worn out (if it has a lot of miles on it) or an oxygen sensor that is contaminated by engine oil or antifreeze leaks causing these fluids to be burned in the exhaust (like bad piston rings, defective PCV valve, blown head gasket, etc.).

In any case, the oxygen sensor needs to be replaced. However it should be noted that if it is caused by contamination like that described above, replacing it will only result in a new oxygen sensor doing the same thing if the cause of the contamination is not repaired.