Conditions for Setting the DTC

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

P0120

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

P0123

The ECM detects that the throttle position sensor 1 voltage is greater than 4.75 V for greater than 1 s.

P0220

The throttle position 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 throttle position sensor 2 voltage is less than 0.25 V for greater than 1 s.

P0223

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

P2135

The difference between the throttle position sensor 1 and throttle position sensor 2 exceeds a predetermined value for greater than 1 s.