[robmarley]

Hopefully someone here may be able to provide some insight.

I have a 2011 550i xDrive with 90K miles on it now. I was having strange misfire issues on cylinder 8 that were due to a bad spark plug. I replaced the plugs and all was good for about 1 day when I went to give the car some gas to change lanes and boost did not kick in. I started smashing the accelerator pedal with little to no response, it drove as if it were an NA car. Also, there was no CEL at all during this time.

I pulled over to scan the car with the Carly app and noticed that I had a rough idle, almost felt like it was going to misfire, but did not set off the CEL.
The scan report came back with the following 3 fault codes and 3 info codes:

Fault Code: 102001
Fault Explanation: Air mass plausibility: air mass too high

Fault Code: 101F01
Fault Explanation: Throttle angle - intake manifold pressure,
correlation: limit exceeded

Fault Code: 107001
Fault Explanation: Limit Exceeded: intake manifold pressure 2,
correlation - throttle angle

INFO CODES:

Code: INFO CDB004
Explanation: 0xCDB004 FA CAN message (data transmission path,
0x1AF): missing

Code: INFO CDB104
Explanation: 0xCDB104 FA-CAN, message (request torque crankshaft
gear, 0xB0): absent

Code: INFO CDA604
Explanation: 0xCDA604 FA-CAN, message (request torque crankshaft
gear 2, 0xA0): absent



My gut is telling me this is a timing chain issue (b/c of the crankshaft info codes + the imap fault codes) but I am praying for an easier solution. Could it just be that my adaptations need resetting? or my crankshaft sensor needs to be replaced?

BTW, after clearing the codes they were gone for the rest of the day without drivability issues, but popped up again the next morning.

If anyone has any thoughts, I would really appreciate the help.

Thanks,

Rob

[Stück]

Has nothing to do with your timing chains. Don't worry about the "info" codes right now.

A code reader is often of little use, bordering on dangerous if its not taken in context by an experienced technician. I'd recommend thoroughly inspecting for a vacuum leak on the crankcase ventilation system, and wastegate control post EPDW. If nothing is found I'd then recommend dropping it off at a trusted independent with ISTA at their disposal and awaiting an accurate diagnosis.

[robmarley]

Originally Posted by Stück

Has nothing to do with your timing chains. Don't worry about the "info" codes right now.

A code reader is often of little use, bordering on dangerous if its not taken in context by an experienced technician. I'd recommend thoroughly inspecting for a vacuum leak on the crankcase ventilation system, and wastegate control post EPDW. If nothing is found I'd then recommend dropping it off at a trusted independent with ISTA at their disposal and awaiting an accurate diagnosis.

I actually also have a full copy of INPA, but have yet to have a chance to run any full diagnostics. Are you familiar with INPA? if so, are there any specific diag tests that you suggest performing?

Thanks again

[Stück]

INPA is for older E chassis cars, altogether outdated and irrelevant to working on late model F and G cars.

You want ISTA/D for current and late model BMWs

[Nemo550]

Any updates on the cause of this issue?
Just had the following fault codes pop up.

Scanning tool: Foxwell nt510
Fault codes:
101F01
107001

Just had a new transmission put in and 300mi later these pop up while passing a car.

[jonobro]

Originally Posted by robmarley

Hopefully someone here may be able to provide some insight.

I have a 2011 550i xDrive with 90K miles on it now. I was having strange misfire issues on cylinder 8 that were due to a bad spark plug. I replaced the plugs and all was good for about 1 day when I went to give the car some gas to change lanes and boost did not kick in. I started smashing the accelerator pedal with little to no response, it drove as if it were an NA car. Also, there was no CEL at all during this time.

I pulled over to scan the car with the Carly app and noticed that I had a rough idle, almost felt like it was going to misfire, but did not set off the CEL.
The scan report came back with the following 3 fault codes and 3 info codes:

Fault Code: 102001
Fault Explanation: Air mass plausibility: air mass too high

Fault Code: 101F01
Fault Explanation: Throttle angle - intake manifold pressure,
correlation: limit exceeded

Fault Code: 107001
Fault Explanation: Limit Exceeded: intake manifold pressure 2,
correlation - throttle angle

INFO CODES:

Code: INFO CDB004
Explanation: 0xCDB004 FA CAN message (data transmission path,
0x1AF): missing

Code: INFO CDB104
Explanation: 0xCDB104 FA-CAN, message (request torque crankshaft
gear, 0xB0): absent

Code: INFO CDA604
Explanation: 0xCDA604 FA-CAN, message (request torque crankshaft
gear 2, 0xA0): absent



My gut is telling me this is a timing chain issue (b/c of the crankshaft info codes + the imap fault codes) but I am praying for an easier solution. Could it just be that my adaptations need resetting? or my crankshaft sensor needs to be replaced?

BTW, after clearing the codes they were gone for the rest of the day without drivability issues, but popped up again the next morning.

If anyone has any thoughts, I would really appreciate the help.

Thanks,

Rob

Hey rob any update on how you fixed Airmass too high ? I'm getting the same thing but I have a dp with a tune

[ziekxq]

I blame the sparkplugs lol.

[jonobro]

Originally Posted by ziekxq

I blame the sparkplugs lol.

What lmao

[ziekxq]

Originally Posted by jonobro

What lmao

I was getting similar error codes with my jb4 plugged in and old spark plugs. I installed brand new sparkplugs, original bmw plugs, and my issues completely went away. No more drive malfunction errors.

I believe from the part description I read on original bmw spark plugs they are better gapped then aftermarket plugs like ngk.

Plus bmw plugs are iridium and I am not sure about ngk ones.