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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > C998 error code



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      03-25-2013, 04:36 PM   #1
dolmaxdog
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C998 error code

Anyone have any idea what C998 error code is?

Dynamic stability control DXC8 Plus - E90

Current Fault Codes
C998:


Thanks...
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      06-07-2013, 07:37 PM   #2
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Fault code c998

I just purchased a wifi elm 327 scanner and performed diagnostic test of my 2006 325xi using the BMWhat lite app for my iPad.

I also got a c998 fault code and can't find it in the list of fault code.

Can anyone point us in the right direction to get an idea of the problem?

Wallyf
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      06-08-2013, 04:16 AM   #3
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2008 BMW 135i  [5.00]
Looks like it's ABS related http://www.bimmerforums.co.uk/forum/...-fault-t55709/
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      06-24-2013, 10:54 PM   #4
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error code table:http://www.spobd2.com/service/diagno...wnload-38.html
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      07-24-2013, 02:19 AM   #5
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This is unfortunately only the OBD codes and not the BMW fault codes list. Do you also have a link to the BMW specific DTC codes that BMWhat finds - or does the App also provide the corresponding full fault text already?
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      02-06-2015, 09:22 AM   #6
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Quote:
Originally Posted by dolmaxdog View Post
Anyone have any idea what C998 error code is?

Dynamic stability control DXC8 Plus - E90

Current Fault Codes
C998:


Thanks...
Sorry to bring back such an old thread but did you ever figure out what was wrong with the car? I also have the C998 code for wheel Tolerance control failure F-CAN but no light on the dash.
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      06-30-2015, 03:39 PM   #7
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C998 code for wheel Tolerance control failure F-CAN

I still have this fault code after a new scan on June 30, 2015.

Then I was thinking, about two years ago I got a tire pressure low fault on my 2006 325xi using my ELM327 scanner. The front left was down 2 psi from the other three tires. I corrected this low tire and reset the tire monitoring function in the OBC.

Maybe the C998 fault is still left over from this low pressure situation.

I will clear the fault and drive the car for a week to see if the C998 fault reappears. I will report back also.

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      10-04-2015, 10:12 AM   #8
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C998 still there

I still have the C998 fault code even after clearing it several times, checking my tire pressure and "resetting" the tire monitoring function.

An internet search comes up blank except that Pelican Parts says it has to do with the ABS/DSC system.

I believe that my system is an ABS 3 since the 2006 3 series was the first year for the Run Flat Tires(RFTs). The fault is somehow related to the "long term" comparison of the rotation of the four wheels; i.e. flat tire monitoring. The 2006 does not have a TPMS and relies on this tire rotation comparison to identify a flat tire.
Here is the description I found:
ABS 3 / DSC
The ABS 3 system added yet more features to the previous systems, such as individual wheel speed comparison over long terms. Gathering the wheel rotation data, and comparing it is accurate enough to identify differences in tyre tread wear, but its main use was as part of a tyre pressure monitoring system. Decreases in the rolling circumference of the tyre from tyre deflation could be monitored as a passive system to identify low pressure in Run Flat Tyres which would often be hard to notice otherwise.


I have checked my tire pressure and have set them to the same value but still get this fault code. Therefore, I must have a slight difference in the diameter of one or more wheel/tire combination.

I welcome any comments into my conclusion.

Wallyf
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      12-19-2015, 10:46 PM   #9
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News on this?

Hi there,

Did you determine what the issue was?

Same code here, with no light.
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