Help confirm the data of 96 Sidekick Sport 1.8l

[fixkick]

It must be in closed loop at idle and ,easy cruise.
so something is very wrong with your EFI.
LT FTRM1 (%) (Long Term Fuel Trim1) -14.8   (this is huge number, means engine runs rich. and EFI must subtract lots of fuel to gain fuel mix right)
why loop the tool, on ) O2S11 (bank 1 sensor one (bank 2 is for V6 engine) you have no V6 engine and no bank 2, so that printout is wrong, calling it Bank 2.
s1 is front (focus on S1)
s2 is rear 02. ok.  forget this.
loop the tool on the front 02 sensor, and set it to graphic mode,  
https://fixkick.com/sensors/O2%20sensor/O2b1s1.jpg
here is real 0-scope (prof scope tek) as you can see a real scope does not miss swings. (the tool is super fast)
https://fixkick.com/smog/oxy2-2500rpm.jpg
Look at this OBD2 STAT (OBD Status) CA, it is something about California?? My car is federal.

at 3000 rpm what is the MAF reading.  ?  hot engine, only tests.




failure to attain closed loop means the ECU (EFI system) is lost.  
it has lost control of fuel mix,  one cause (of many are MAF readings are not correct or 02 Sensor #1 front #1 reads wrong)

the O2 must swing.
other causes, (vacuum leaks, leaking or weaK Injectors, misfire gross.  and exhaust manifold cracks, )

how old is that 02 front sensor.? (they have 100,000+ mile life span if using unleaded fuel)

Thanks. So it all means my ecu stops working???
How can it be?? It could be my tool is not the right one?? The car just runs?
The engine is just 097394.

not at all,   you are not the first person on earth to have car problems just  like this, it is SUPER COMMON in fact.
no it did not stop working , not at all
the ECU in your car will run in many modes,
not just one, it is not simple, this it a complex topic, EFI.

The ECU will lost and drop out of Closed loop for many reasons. (some are normal like cold engine or at wide open throttle)
the ECU CAN  fail to reach closed loop for just  1 crack near the o2 front sensor, what could be more simple? a crack .  or 02 bad
you never answered my 1 questions is O2 front new? or  original, or even the wrong one.


do you know what closed loop means?>
it is simple the ECU reads the O2 sensor and uses what it reads there, to adjust injection fuel rates (flow).  in  computer loop, or as engineers say a SERVO loop.

here is  fake pseudo code. (ecu processor code(firmware)
1: read O2 front.
2: check AFR, (air fuel ratio  (math) 
3: adjust fuel to attain, 14.7: 1 AFR< air fuel ratio by changing injector PWM rates (more math)
4:  if rates go to STOICH (14.7:1) ratio good, if not closed loop ends. and set status flag for failed  for close loop false.
5: go to #1 (this is the loop thing in all computers, a jump we call it. (crude)

This is how all cars with  EFI run.   This also lower smog emissions to lowest, and max fuel economy. both,  that is why we have EFI, for these 2 reason.
the ECU can also go to limp home mode if sensors fail.


why not ask your shop to look in to loss of closed loop , a good shop can find it easy, doing test.