Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

P0151

The ECM detects that the HO2S 1 Voltage parameter is less than 50 mV.
DTC P0151 sets within 100 seconds during the lean test when the above condition is met.

P0152

The ECM detects that the HO2S 1 parameter is more than 1,050 mV.
DTC P0152 sets within 15 seconds during the rich test when the above condition is met.

P0157

The ECM detects that the HO2S 1 voltage parameter is less than 50 mV.
DTC P0157 sets within 100 seconds during the lean test when the above condition is met.

P0158

The ECM detects that the HO2S 1 voltage parameter is more than 1050 mV.
DTC P0158 sets within 100 seconds during the rich test when the above condition is met.