P2195

[f1fan]

Ok guys first post here. I have searched the forums for this but I have not really seen anything with the same issues. I have a 2006 4.6 3v limited and the issue is a only at idle when clod or hot. I get a small stumble of the idle and the P2195 lean o2 sensor bank 1 code pops up. I have changed all coils and spark plugs with motorcraft parts. I have smoke tested for vacuum leaks, checked all vacuum lines for leaks as well as cleaned throttle body and MAF. I inspected for possible electrical wire damage and can’t find anything. The truck has 88,000 miles on it. When normal diving there is no issue and I am dumbfounded. Any help would be great, thanks in advance!

 

[Fix4Dirt]

low fuel pressure, o2 sensor issues... thats the usual suspects. but cause its only one bank, then i suspect o2s

 

[f1fan]

low fuel pressure, o2 sensor issues... thats the usual suspects. but cause its only one bank, then i suspect o2s

I replaced the fuel filter and o2 sensors

 

[Fix4Dirt]

huh strange. how was the wiring leading up to it? can you cear codes to see if they come back?

 

[f1fan]

I replaced the fuel filter and o2 sensors.

 

[f1fan]

huh strange. how was the wiring leading up to it? can you cear codes to see if they come back?

Yep, cleared and came back in a few days.

 

[f1fan]

Yep, cleared and came back in a few days.

Yes

 

[Fix4Dirt]

Yes

not sure then. do these have IAC? i forgot if they got rid o em or not

 

[f1fan]

I have changed cam phasers and put new intake manifold gaskets and nothing. This is so frustrating. Code came back!

 

[f1fan]

not sure then. do these have IAC? i forgot if they got rid o em or not

I don’t believe so on the 3v

 

[94Eddie]

Have you looked at live data for the long/short term fuel trim for both banks to see if the numbers are within spec.

 

[f1fan]

Have you looked at live data for the long/short term fuel trim for both banks to see if the numbers are within spec.

I will as soon as I can.

 

[f1fan]

I will as soon as I can.

 

[f1fan]

ST -3.9 cold LT 12.5 cold
ST -1.1 warm LT 11.7 warm
02b1s1 .0-.8
02b1s2 .0-.6
02b2s1 .0-.7
02b2s2 .5-.6 (should I be concerned)