I was driving home from work the other day. My engine light came up while idling, the truck is not running rough.
During examination today we noticed during idle there's a very intermittent "misfire", Suttle like a minute pulse. Once hooked up to the scan tool the following codes came up.
P2197 - stuck lean bank 2 sensor 1
P2195 - stuck lean bank 1 sensor 1
P0171 - system to lean bank 1
P0174 - system to lean bank 2
P2096 - post cat. Fuel trim system to lean bank 1

We replaced air filter (we were there why not), cleaned MAF sensor and inspected for any leaks etc.

After a bit of tinkering and cleaning. We hooked the scan tool up again. Erased codes and monitored the system.
A pending code came up
P0150 - 02 sensor bank 2 sensor 1

Also the following information at idle..
02B2S2 v 0.025 stayed consistent at number during idle.
Fuelsys1 CL - fault
Short f1% -2.3 average
Longft1% 29.7
Shortft2% 3.1 +/-
Longtf2% 29.2
MAF lb/3.1 gs

Picking up new fuel filter this week as its due. Anything else other then the oxygen sensor I should consider looking at .
2010 ford f150 5.4L 133 500 km regular maintenance consistent as needed

 

Vacuum leaks.