Was engine warmed up?
Engine temp should be higher that 183degF
O2 11 and 12 are the ones the computer uses to adjust fuel mix, they are showing extremely Lean burn, O2 sensors can only see Oxygen levels in exhaust, O2 sensors generate their own voltage, 0.1v to 0.9v
0.1v means too much oxygen is in the exhaust, so Lean burning of fuel, 0.9v means too little oxygen in exhaust so Rich burn.
O2s 11 is bank1(passenger side of engine) and showing 0.155
O2s 12 is bank2(drivers side of engine) and showing 0.085
These would mean alot of engine knock(pinging)
The problem I see is that computer should be adding more fuel to bring these O2 sensors voltage up to 0.45v, and it is not doing that.
O2 sensors can only working after they get above 600degF, so engine MUST be warmed up to get valid data from scanner/reader, which is why I asked if engine was warmed up
It also says MIL(check engine light) is off, which it shouldn't be if engine was warmed up and those 2 O2 sensors had those levels
having two O2s sensors fail at the same time would be extremely long odds
So problem needs to be something that effects BOTH banks of the engine.
But my problem with the data provided is that it shouldn't happen, the computer gives the O2 sensors final word on the fuel mix ratio.
MAF can fail, fuel pressure can drop, massive vacuum leak can happen, but computer would just add more fuel to keep O2 sensors at 0.45v, and then turn on CEL to let driver know about the problem.
Maybe in the "snapshot" you caught both O2 sensors at a low, which could happen.
And your Long Term Fuel Trims(LTFT) do show +24 and +25 which do indicate extra fuel is being added consistently.
Check fuel pressure would be a good step
Last edited by RonD; 12-22-2015 at 09:34 AM.