Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

P0131, P0137, P0151, or P0157

The ECM detects that the HO2S voltage is less than 50 mV.
The DTCs set within 100 s when the above condition is met.

P0132, P0138, P0152, or P0158

The ECM detects that the HO2S voltage is greater than 1, 050 mV.
The DTCs set within 15 s when the above condition is met.