Oil Sensor Fault Code 2E9F?

Yangorang · 09-03-2016, 08:51 PM

I love RedLine oil and my car runs smoothly with it but every time I change to it my car seems to throw an oil condition sensor fault code 2E9F in the DME. Have you guys ever heard of this happening?

10/30/2015 40000 - oil change to Red Line 5W-30 - kept ECS magnetic drain plug - DIY
3/4/2016 43729 - Dealership replaced faulty oil condition sensor (code only no dash light) - dealer refilled with OE oil but doesn't look like they changed filter - fault code went away for a while
5/27/2016 46100 - changed engine oil to Red Line 5W-30 and filter - kept ECS magnetic drain plug - DIY
9-3-2016 48575 - When using application to reset window regulators happened to see fault code for oil condition sensor again but no warning light on dash.

Efthreeoh · 09-04-2016, 05:45 AM

Does the e-dipstick work and returns an oil level reading?

Yangorang · 09-04-2016, 03:54 PM

There is no warning in the dash and the oil sensor just returns a reading of "Max". If I didn't read the code from the DME I wouldn't think anything was wrong.

Efthreeoh · 09-06-2016, 04:44 AM

So I got to thinking about this issue. I've had that same code come up on my Foxwell scan tool. It shows up after an oil change because the system has not yet reestablished the oil level after the engine was drained of oil. The way to test for this is after the oil change and system reestablishes the new oil level, the code should be gone.

It's normal.

Yangorang · 09-07-2016, 04:03 PM

It's been a few thousand miles since I put in the Red Line oil, and I've cleared the fault code several times already via Bavarian Technic.

I got the following respones from Red Line:

Quote:

Thank you for contacting Red Line Oil, yes I have heard of issues, BMW has a TSB for early sensors, likely yours was changed. The sensors seem excessively sensitive to the conductavity of the oil and any moisture present. Our oil appears to have slightly different electrical characteristicts than their oil. A few vehicles appear to experience an issue most don’t.

I'll try filling with the official BMW oil at the next oil change and see if the fault ends up going away.

Yangorang · 10-08-2016, 05:20 AM

Yup....changed out the Red Line Oil and the fault code went away immediately. Not sure if it really matters but I guess I'll just stick with regular LL-01 oils.
Friggin wasted money replacing that oil sensor in the first place. Never thought that any specific oil could possibly cause it to throw a code.

09-03-2016, 08:51 PM	#1
Yangorang Second Lieutenant 65 Rep 231 Posts Drives: 2008 BMW 328xi Join Date: Aug 2013 Location: Houston, TX iTrader: (0)	Oil Sensor Fault Code 2E9F? I love RedLine oil and my car runs smoothly with it but every time I change to it my car seems to throw an oil condition sensor fault code 2E9F in the DME. Have you guys ever heard of this happening? 10/30/2015 40000 - oil change to Red Line 5W-30 - kept ECS magnetic drain plug - DIY 3/4/2016 43729 - Dealership replaced faulty oil condition sensor (code only no dash light) - dealer refilled with OE oil but doesn't look like they changed filter - fault code went away for a while 5/27/2016 46100 - changed engine oil to Red Line 5W-30 and filter - kept ECS magnetic drain plug - DIY 9-3-2016 48575 - When using application to reset window regulators happened to see fault code for oil condition sensor again but no warning light on dash.
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09-04-2016, 05:45 AM	#2
Efthreeoh General 17309 Rep 18,734 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	Does the e-dipstick work and returns an oil level reading? __________________ A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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09-04-2016, 03:54 PM	#3
Yangorang Second Lieutenant 65 Rep 231 Posts Drives: 2008 BMW 328xi Join Date: Aug 2013 Location: Houston, TX iTrader: (0)	There is no warning in the dash and the oil sensor just returns a reading of "Max". If I didn't read the code from the DME I wouldn't think anything was wrong.
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09-06-2016, 04:44 AM	#4
Efthreeoh General 17309 Rep 18,734 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	So I got to thinking about this issue. I've had that same code come up on my Foxwell scan tool. It shows up after an oil change because the system has not yet reestablished the oil level after the engine was drained of oil. The way to test for this is after the oil change and system reestablishes the new oil level, the code should be gone. It's normal. __________________ A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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10-08-2016, 05:20 AM	#6
Yangorang Second Lieutenant 65 Rep 231 Posts Drives: 2008 BMW 328xi Join Date: Aug 2013 Location: Houston, TX iTrader: (0)	Yup....changed out the Red Line Oil and the fault code went away immediately. Not sure if it really matters but I guess I'll just stick with regular LL-01 oils. Friggin wasted money replacing that oil sensor in the first place. Never thought that any specific oil could possibly cause it to throw a code.
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