OBD2 CODE

BMWrules7 · 10-13-2013, 04:40 PM

Hi, my car keeps throwing a code p0141: Oxygen Sensor Heater Circuit Bank 1 Sensor 2. (2013 750Li). I am asking here because this group seems to understand the internals better than the 7 group.

But, what I don't understand is that the mil light is off and check control ok. There is no indication of an error except when I connect a reader to the obd port.

Can anyone comment on why there is no indication of a problem; yet, the code keeps coming back after it's cleared.

raleedy · 10-13-2013, 06:16 PM

Dealer.

BMWrules7 · 10-13-2013, 10:42 PM

Quote:

Originally Posted by raleedy

Dealer.

Who would ever have guessed that your 1500th post would be so helpful. Lol!

Boss330 · 10-14-2013, 05:36 AM

There are loads of codes that doesn't turn on the "MIL light". That's usually codes that doesn't affect the daily driving but is just stored in the DME/ECU so that the dealer can take a closer look at it when at service. It might be an intermittent problem or a problem that only occurs under certain conditions and doesn't necessitate an immediate remedy.

If you have a BMW OBD scanner it will tell you that there is a fault, what the fault is and whether the fault does or doesn't ignite the "MIL light".

On a generic OBD reader you will only get the codes/faults and no explanation on whether it should or should not result in a MIL light situation.

A fault that doesn't show up on the dash, is a fault that doesn't need immediate action but can wait until next service. Ie a fault that doesn't influence safety, environment and/or daily driving.

10-13-2013, 04:40 PM	#1
BMWrules7 Lieutenant Colonel 349 Rep 1,684 Posts Drives: 2015, 740 LdX, Alpine White Join Date: Mar 2011 Location: Boston Area iTrader: (0)	Hi, my car keeps throwing a code p0141: Oxygen Sensor Heater Circuit Bank 1 Sensor 2. (2013 750Li). I am asking here because this group seems to understand the internals better than the 7 group. But, what I don't understand is that the mil light is off and check control ok. There is no indication of an error except when I connect a reader to the obd port. Can anyone comment on why there is no indication of a problem; yet, the code keeps coming back after it's cleared.
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10-13-2013, 06:16 PM	#2
raleedy Colonel 160 Rep 2,248 Posts Drives: 2016 228i 6-speed Join Date: Jul 2005 Location: Portland, Oregon iTrader: (0)	Dealer.
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10-14-2013, 05:36 AM	#4
Boss330 Major General 1715 Rep 5,110 Posts Drives: BMW Join Date: Mar 2012 Location: Earth iTrader: (0)	There are loads of codes that doesn't turn on the "MIL light". That's usually codes that doesn't affect the daily driving but is just stored in the DME/ECU so that the dealer can take a closer look at it when at service. It might be an intermittent problem or a problem that only occurs under certain conditions and doesn't necessitate an immediate remedy. If you have a BMW OBD scanner it will tell you that there is a fault, what the fault is and whether the fault does or doesn't ignite the "MIL light". On a generic OBD reader you will only get the codes/faults and no explanation on whether it should or should not result in a MIL light situation. A fault that doesn't show up on the dash, is a fault that doesn't need immediate action but can wait until next service. Ie a fault that doesn't influence safety, environment and/or daily driving.
	Appreciate 0 Quote