Cadillac P1153: HO2S Insufficient Switching Bank 2 Sensor 1

What Does The Cadillac P1153 Code Mean?

This code indicates that the ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.

Conditions for setting the DTC:

• The engine coolant temperature (ECT) is greater than 60°C (140°F).
• The intake air temperature (IAT) is warmer than -40°C (-40°F).
• The ignition 1 voltage is between 10-18 volts.
• The fuel level is greater than 10 percent.
• The engine run time is greater than 160 seconds.
• The engine speed is between 1,200-3,000 RPM.
• The barometric (BARO) pressure is greater than 70 kPa.
• The mass airflow (MAF) is between 20-55 g/s.
• The fuel system is in Closed Loop.
• The throttle position (TP) is greater than 5 percent.

DTC P0133 runs once per drive cycle when the above conditions are met.

How Can You Fix The Cadillac P1153 Code?

Check possible solutions below:

• Check any other DTC on display
• Using a scan tool, check current data
• Check rear sensor signal
• Check exhaust system

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> A-Premium O2 Oxygen Sensor Upstream Downstream Replacement

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

• GM, 2013, Service Bullettin – Service Stabilitrak Message And Possible Multiple Powertrain DTCs.
• GM, 2013, Service Bullettin – Prior To Any Circuit Testing.