Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

P0121

The ECM detects the TP sensor is stuck within range for greater than 1 s.

P0120

The ECM detects the 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 the TP sensor 1 voltage is less than 0.325 V for greater than 1 s.

P0123

The ECM detects the TP sensor 1 voltage is greater than 4.75 V for greater than 1 s.

P0220

The ECM detects 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 the TP sensor 2 voltage is greater than 4.59 V for greater than 1 s.

P2135

The ECM detects the difference between the TP sensor 1 and TP sensor 2 exceeds a predetermined value for greater than 1 s.