2011 Mini Countryman

2011 mini Countryman no turbo
1.6 L engine
I get this code: P3016 on my scanner:
"Internal control module O2 sensor calibration resistance error bank1 sensor1"
This sensor was replaced but not an OEM
Average fuel used excellente 7L/100km
Both trim codes near 0
NO CHECK ENGINE LIGHT
no missfire.
If I clear the scanner error code it returns in a few minutes. 
I'm out of ideas, anyone's help appreciated.
Richard

Hi Richard1

Is downstream sensor same as upstream?

If it is, i would swap them to confirm whether or not code moves.

Thanks
That was a good thought, but there not the same, and it does go into closed loop go figure.

Is that sensor 1 a narrow band sensor?
​​​​​​
I don't know the circuit you are dealing with. I only can imaging an internal voltage divider circuit which is being affected by the resistance of this new no oem sensor.

Do they have the same resistance (old and new)?

Hi Guafa
Unfortunately I did not keep the old one but its a 4 wire so probably a heated one and I believe those cannot be tested with a multimeter for resistance.
Wish I had access to AllData or Identafix to see the wiring diagram for this mini.
But thank you

Post VIN number or make, year, model, engine and every detail you have.

2011 Mini Countryman
Model R60
1.6L non turbo
Vin: WMWZB3102BWL00329

OK, there you have.

I´m confused, since you mentioned sensor 1 is a 4 wire. Drawings are suggesting sensor 1 is a 5 wire one. Is it at top of exhaust pipe?

Yes it is at the top of the catalitic, sorry I went from memory, i could not go check it out its raining really hard.
Possibly the downstream had 4
Thenk you

OK, according to drawing you have an internal sensor voltage divider.

My first interpretation is that sensor signal (gray) has a voltage reference (blue) and a ground reference (yellow). They are reference voltage PCM expects to read (sense) and depend on values of internal sensor voltage divider (internal resistance).

So my first shoot would be to compare those resistance with oem sensor (i know you trashed it). We need to find some kind of test procedure which let us know those resistance values.

Why did you change oem sensor by the way?

Reason I changed both sensor I kept getting the same error on both sensors and the engine stayed in open loop.

After both sensors were changed it now goes well into closed loop without the check engine, but on the scanner I still get the P3016 with no other adverse effect. Would i not have a scanner, I would have no way to know there is still something not quite right.

I'm surprised that everything else is in order fuel trims are great below 3% combined.
Is it worth continuing the research I believe it is, even if only for the knowledge gained on after market parts which like you I'm tempted to believe the new sensor internal resistance when in operation can be different, but i was under the impression the this type of sensor can only be verified by looking at the miliamps on a scope?
I could be wrong, would not be the first time lol.

I'm just a DIY so I cannot justify paying a couple of hundred dollars a month for AllData or other similar unfortunately, I do appreciate your help, thank you for that.
Does the sensor page give any type of reference voltages on that sensor connector or a standard waveform to compare to?

Ok Richard1.

P3016 is related to a calibration resistance inside pcm, which determines heater temperature (not related to signal circuit).

It is set due to pcm expects to read a voltage (inside pcm) when a voltage is aplied to that calibration resistance.

That seems if you have tested pcm voltages and grounds and they are correct, you have a pcm issue.

Hi Guafa
Thank you for your patience, I would test the PCM voltages for sure but I do not know what the specs. should be, if you have that info I would appreciate it.
Today the engine stayed in open loop till I turned it off and started it again, but still no check engine, just the P3016 on the scanner.
It would be easy for me to backprobe it, easy access.

Look for scannerdanner videos related to voltage drop tests (not only power wires but grounds also).

You shouldn't see more than 100mV on grounds and battery voltage drops on power wires.

PCM has decided to stay in open loop because she detected a problem which doesn't allow to see O2 sensor accurately.

The fact MIL is not ON could be is waiting for a certain amount of cycles or the code is categorized as "soft code" 

Bear in mind also that i don't know how that calibration resistance is conected to O2 sensor heater, then i don't know whether or not your new non oem O2 sensor heater is affecting the calibration process.

I'll look it up.
Thank you

Not the same Front sensor is AFR sensor Rear is O2 sensor

Hi Thanks for your reply PCM was just checked do to another issue and turns out ok, problem is I dont have a reference of what the Heater temp should be how many volts it should send to PCM