Question

What is the meaning of the engine code P013C for my 2009 GMC Sierra 2500 6.0L? My code reader would not read this code.

Answer 1

The P013C indicates a problem with the Heated Oxygen Sensor more specifically the Heated Oxygen Sensor Bank 2 Sensor 2. You must replace the sensor to fix the problem. Here is a link to the code page for more information:

P013C GMC Code - HO2S Slow Response Rich to Lean Bank 2 Sensor 2
Read more: https://www.autocodes.com/p013c_gmc.html