Can anyone help with fault codes PO221, PO101, PO120? Found list on net that did not contain these codes.

 

Hi,
Standard generic OBDII codes.

P0101 MAF circuit Range/Performance problem
PO221 Throttle pedal position sensor / Switch B circuit range (Kick down?)
PO120 Throttle pedal sensor / Switch A circuit

So what's the problem + history?

Stuart