[D's Bimmer]

Driving home from work this afternoon the car felt off. I have been getting this odd "feedback" from my MT at high rpm's. Kind of like a dull vibration.

Anyways, on the way home, my car went into limp mode, code city....

Intermittently, I have had the following two codes over the past few weeks:

2CF4 - Oxygen sensor before catalytic converter, dynamics:Slow Response

2D2F - Oxygen sensors before catalytic converter:Multiple fault

Both are O2 related codes.

I pulled an initial log this morning for an initial map for a custom tune that Ken is doing for me and this is what it looked like....

http://www.datazap.me/u/diggler70/lo...=0&data=4-5-15

Then this afternoon...

2EE0 - Combustion misfiring, several cylinders:Fuel injection deactivation

2EE2 - Combustion misfiring, several cylinders:damaging exhaust gas after start sequence

2EF4 - Combustion misfiring, cylinder 6:Fuel injection deactivation

2EF6 - Combustion misfiring, cylinder 6

2EFE - Misfire, several cylinders

2F04 - Misfire, cylinder 6

Reduced power, rough idle and chugging pulse from the engine. Could this be caused by a faulty O2 sensor? I had one of them replaced a couple of months ago. I think that there are two in my car if I understand correctly.

Thanks,

[Boosted2000Si]

Google the codes and post what they are

[bahn]

Originally Posted by D's Bimmer

Driving home from work this afternoon the car felt off. I have been getting this odd "feedback" from my MT at high rpm's. Kind of like a dull vibration.

Anyways, on the way home, my car went into limp mode, code city....

Intermittently, I have had the following two codes over the past few weeks:

2CF4 - Oxygen sensor before catalytic converter, dynamics:Slow Response

2D2F - Oxygen sensors before catalytic converter:Multiple fault

Both are O2 related codes.

I pulled an initial log this morning for an initial map for a custom tune that Ken is doing for me and this is what it looked like....

http://www.datazap.me/u/diggler70/lo...=0&data=4-5-15

Then this afternoon...

2EE0 - Combustion misfiring, several cylinders:Fuel injection deactivation

2EE2 - Combustion misfiring, several cylinders:damaging exhaust gas after start sequence

2EF4 - Combustion misfiring, cylinder 6:Fuel injection deactivation

2EF6 - Combustion misfiring, cylinder 6

2EFE - Misfire, several cylinders

2F04 - Misfire, cylinder 6

Reduced power, rough idle and chugging pulse from the engine. Could this be caused by a faulty O2 sensor? I had one of them replaced a couple of months ago. I think that there are two in my car if I understand correctly.

Thanks,

Probably two unrelated issues. That log looks good except for the timing corrections. How old are the spark plugs, what kind are they and what are they gapped to?

Did these codes appear during a WOT pull or were they during normal driving?

These cars will deactivate the injectors on a cylinder when repeated misfires occur until the car is turned off and turned back on.

Answer the above questions and we can go from there.

[D's Bimmer]

Originally Posted by bahn

Probably two unrelated issues. That log looks good except for the timing corrections. How old are the spark plugs, what kind are they and what are they gapped to?

Did these codes appear during a WOT pull or were they during normal driving?

These cars will deactivate the injectors on a cylinder when repeated misfires occur until the car is turned off and turned back on.

Answer the above questions and we can go from there.

The plugs are new about 2 months ago. I believe they are gapped to 0.20 but would need to confirm.

These codes initially appeared on a WOT. They still appear and the car still runs rough and half engine light. Even after repeated restarts and sitting over night.

[bahn]

Originally Posted by D's Bimmer

The plugs are new about 2 months ago. I believe they are gapped to 0.20 but would need to confirm.

These codes initially appeared on a WOT. They still appear and the car still runs rough and half engine light. Even after repeated restarts and sitting over night.

Any chance of getting a log of it happening? I'm wondering if your rail pressure is dipping and causing misfires during a WOT pull.

[D's Bimmer]

Originally Posted by bahn

Any chance of getting a log of it happening? I'm wondering if your rail pressure is dipping and causing misfires during a WOT pull.

I am at the shop with it now hoping to find out more. Will log as soon as I can but I definitely can't WOT. I went back to the Stock O Map last night as well. Problem still persists.

[bbnks2]

Lol, replace the o2 sensor? Seems obvious but idk...

[D's Bimmer]

It looks like the brand new Bosch spark plug in cylinder 6 had an issue. The insulation sleeve inside the plug became dislodged and would completely cover the tip. We swapped cylinder 1 and 6 and the misfire issue followed it. Just gonna replace the one new plug for now and see if that fixes everything.

[kievlanine@gmail.com]

I am having similar issues, have you had a resolution for this?

[Nolan2221]

Originally Posted by D's Bimmer

It looks like the brand new Bosch spark plug in cylinder 6 had an issue. The insulation sleeve inside the plug became dislodged and would completely cover the tip. We swapped cylinder 1 and 6 and the misfire issue followed it. Just gonna replace the one new plug for now and see if that fixes everything.

What ended up fixing this? I’m having the exact same fault code and problem.

[D's Bimmer]

Originally Posted by Nolan2221

What ended up fixing this? I’m having the exact same fault code and problem.

After additional testing it appears to be a problem with my fuel injectors. A pricey repair is ahead it seems. $3k US

[jlegelis]

You don't mention miles, but 'fuel injectors' on a 2016 seems suspect given 'misfires'.

What about coils, wires, etc and all other ignition related components? Stick with the stock tune until you get it figured out...

[wrevilo]

I know I am dragging up an old thread, but my car has been running noticeably poorly over the past couple of days and I too have received errors 2CF4 and shadow code 2D2F.

Luckily, my car is going into the garage this weekend to replace the high pressure fuel sensor and a couple of gaskets around the turbo where I have air leaks, among other works.

I have ordered a replacement lambda sensor 11787596924 (Bosch 0258027019) in case this is needed. I'll report back - hopefully this doesn't turn into needing to replace injectors!

/edit/ annoyingly the replacement lambda sensor I ordered with overnight delivery hasn't arrived! /edit/

[ilikemycar]

Originally Posted by wrevilo

I know I am dragging up an old thread, but my car has been running noticeably poorly over the past couple of days and I too have received errors 2CF4 and shadow code 2D2F.

Luckily, my car is going into the garage this weekend to replace the high pressure fuel sensor and a couple of gaskets around the turbo where I have air leaks, among other works.

I have ordered a replacement lambda sensor 11787596924 (Bosch 0258027019) in case this is needed. I'll report back - hopefully this doesn't turn into needing to replace injectors!

/edit/ annoyingly the replacement lambda sensor I ordered with overnight delivery hasn't arrived! /edit/

Same issue here dude. Is it fixed now?

[wrevilo]

Originally Posted by ilikemycar

Same issue here dude. Is it fixed now?

I don't actually have my car back yet! The job snowballed somewhat to include the tensioner, belt and pulleys on the front of the engine and now front drop links. I'll report back when I have the car.

[EnzoKhan]

Originally Posted by wrevilo

I know I am dragging up an old thread, but my car has been running noticeably poorly over the past couple of days and I too have received errors 2CF4 and shadow code 2D2F.

Luckily, my car is going into the garage this weekend to replace the high pressure fuel sensor and a couple of gaskets around the turbo where I have air leaks, among other works.

I have ordered a replacement lambda sensor 11787596924 (Bosch 0258027019) in case this is needed. I'll report back - hopefully this doesn't turn into needing to replace injectors!

/edit/ annoyingly the replacement lambda sensor I ordered with overnight delivery hasn't arrived! /edit/

Do you have any updates?
I replaced my upstream O2 sensor about a year ago with BMW OEM sensor but suddenly started getting the exact same codes. Car drives just fine though.

2011 e92 with 130k miles.