Conditions for Setting the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

P0131

The ECM detects that the HO2S 1 Voltage parameter is less than 50 mV.
DTC P0131 sets within 100 seconds when the above condition is met.

P0132

The ECM detects that the HO2S 1 parameter is more than 1,050 mV.
DTC P0132 sets within 15 seconds when the above condition is met.

P0137

The ECM detects that the HO2S 2 voltage parameter is less than 50 mV.
DTC P0137 sets within 100 seconds when the above condition is met.

P0138

The ECM detects that the HO2S 2 voltage parameter is more than 1,050 mV.
DTC P0138 sets within 100 seconds when the above condition is met.