Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0153

The control module detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is more than 0.14 second.
These DTCs set within 60 seconds when the above condition is met.

DTC P0154

The control module detects that the HO2S 1 parameter is between 400-500 mV.
The Throttle Position (TP) Indicated Angle parameter changes more than 5 percent.
These DTCs set within 101 seconds when the above conditions are met.

DTC P1153

The control module detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
These DTCs set within 60 seconds when the above condition is met.

DTC P2A03

The control module detects that the Loop Status parameter is open.
DTCs P2A00 and P2A03 set within 5 seconds when the above condition is met.