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BMW 3-Series (E90 E92) Forum
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Help, fault codes out of nowhere
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12-23-2011, 08:19 PM | #1 |
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Help, fault codes out of nowhere
Hey guys, need some help, got a 2011 e92 335xi no performance mods done except jb4, today got a Service Engine Soon light on my dash, read the codes and it told me that there are 3 codes...2C90...28A0...316
2C90 - ???? 28A0 - output gas circuit switch - what the hell dors this mean and why do i have it 316 - ???? I thought codes have to be 4 digits. I checked multiple times, it is 316 and the flashes 4 times to say its the end. All of this dtarted an hour ago, i chrcked codes a week ago on steering wheel for shits and giggles and system showed me 0 codes, and now 3....Wtf? Fml! Please help someone |
12-24-2011, 08:23 AM | #3 |
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2C90 - Blow off valve, mechanics: Jammed closed
28A0 - Throttle-valve angle - intake mainfold pressure correlation; limit exceeded 28A0 is a tuner code and should be ignored. 2C90 .... not 100% sure on that one but it's not serious. Basically sounds like something that should be cleared. And about the 316 one - yes they are four digits - it's possible one of the numbers is repeated. Or it's 0316: Ambient pressure sensor, plausibility; pressure too high I'm thinking your JB is not auto-clearing codes or one of the JB's connections is loose. Where did you get it installed?
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12-24-2011, 09:32 AM | #4 |
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"I'm thinking your JB is not auto-clearing codes or one of the JB's connections is loose. Where did you get it installed"
This!
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12-24-2011, 03:36 PM | #7 |
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If the speedo stays on a number twice as long then that digit is repeated. Maybe your code is 3166, "Tank safety valve: malfunction", which is a gas tank ventilation issue you'd go in to the dealer for. The other two codes are just the tuner codes you ignore.
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12-25-2011, 08:32 PM | #10 |
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So i cleard the codes and 3166 was gone but the other two still were there, but i turned off autoclear around 2 months ago, and Service Engine Soon wasnt on before but today came on again, only the other 2 codes are present which acoording to Mike are regular tuner codes, but why does my light come on now to Service Engine Soon but before it never did?
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12-25-2011, 09:08 PM | #11 | |
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12-25-2011, 09:15 PM | #12 |
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Well the 3166 code went away only the 2C90 and 28A0, are both of the tuner codes? But how will i know if there will be an important code that needs to be handled if something were to present itself in the future?
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12-26-2011, 01:03 PM | #13 | |
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12-26-2011, 01:53 PM | #14 |
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lol no shit =P
but i did not have auto clear on.... basically i turned off autoclear about 2 months ago or so. no SES light or anything until Friday. Friday the light came on and i checked for codes through steering wheel, it told me i had those 3 codes above. as soon as i turned off the car for about 2 hours, and came back, the light disappeared but the 3 codes still stayed (because i did not clear them manually), then i cleared the codes to make sure which codes come back. Only the first 2 came back, not the 3166 code, but the SES light still comes on. My question is, why? I had autoclear OFF for a while, and never had SES light until 3166 came on, but now its cleared, but the SES light still comes on when I have these 2 tuner codes but didnt before? |
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12-26-2011, 02:09 PM | #15 | |
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