Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
P0120
TP sensor 1 voltage is less than 0.35 volt or more than 4.58 volts for more than 0.5 second.
P0122
The ECM detects that the TP sensor 1 voltage is less than 0.35 volt for more than 0.5 second.
P0123
The ECM detects that the TP sensor 1 voltage is more than 4.58 volts for more than 0.5 second.
P0220
The TP sensor 2 voltage is less than 0.35 volt or more than 4.7 volts for more than 0.5 second.
P0222
The ECM detects that the TP sensor 2 voltage is less than 0.35 volt for more than 0.5 second.
P0223
The ECM detects that the TP sensor 2 voltage is more than 4.59 volts for more than 0.5 second.
P2135
The difference between the TP sensor 1 and TP sensor 2 exceeds a predetermined value for more than 5 seconds.