My check engine light has been on for awhile now, I pulled the codes and this is what I got:
P0140-O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0141-O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 2
P0133-O2 Sensor Circuit Slow Response (Bank1, Sensor1)
P0135-O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P1133-O2 Sensor Insufficient Switching (Bank 1, Sensor 1)

I cleared the codes yesterday, drove 100 miles or so no problem. Today the CEL came on during my drive to work. Cleared the codes again drove about 50 miles then it comes back on. When the CEL comes on my truck seems sluggish, running rich and poor gas mileage. Any help is greatly appreciated. Thanks.

 

Check all connections to the air filter to the engine

 

Since they are all related to your O2 sensors, maybe it's time to replace your O2 sensors? Are they original, or if not, how old?

 

They were on the truck when I bought it. I'm going to replace them soon I just don't get how there's no activity detected On sensor 2 or how theres a heater malfunction. I've checked all the wiring to them and didn't see any chaffing or shorted wires.