So I fixed my P0410 code and now I have these 4 codes showing...I have a 2001 Blazer 2 door 4.3 V6 4WD...P0131(Bank 1 Sensor 1) P0151(Bank 2 Sensor 1) P0171(Bank 1) and P0300...so my question is that I probably just need new oxygen sensors???

 

An educated guess would be faulty oxygen sensors. You'll need to follow the flow charts to be sure. They are all lean mixture codes from the O2 sensors. Keep in my mind what the secondary air system does: it pumps fresh air into the exhaust, upstream of the oxygen sensors, which, if there's a problem with the secondary air system it will cause the O2 sensors to indicate lean.

The secondary air monitor relies heavily on oxygen sensor data. If the sensors are lazy or dead, P0410, P0131, P0171, and P0174 are all likely to set.

 

Thank you...I will follow the flow charts...much appreciated!!!