P0158 CADILLAC -

Question

I have a check engine light po158 and was wondering what is the cause of it and how to repair it and its a 2005 cadillac cts.

Answer 1

This code is for the heated O2 sensor #2 on bank 2.Typically the heater element burns out in the sensor and the sensor needs to be replaced to resolve the problem.Sensor 2 is the sensor after the catalytic converter.