Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
P0120
TP sensor 1 voltage is less than 0.325 V or greater than 4.75 V for greater than 1 s.
P0122
The ECM detects that the TP sensor 1 voltage is less than 0.325 V for greater than 1 s.
P0123
The ECM detects that the TP sensor 1 voltage is greater than 4.75 V for greater than 1 s.
P0220
The TP sensor 2 voltage is less than 0.25 V or greater than 4.59 V for greater than 1 s.
P0222
The ECM detects that the TP sensor 2 voltage is less than 0.25 V for greater than 1 s.
P0223
The ECM detects that the TP sensor 2 voltage is greater than 4.59 V for greater than 1 s.
P2135
The difference between the TP sensor 1 and TP sensor 2 exceeds a predetermined value for greater than 2 s.