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11-16-2015, 07:32 PM | #1 |
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Increased Emissions- no limp mode-Safe to drive?
Hi Everyone,
I dont have a code reader and have not had a chance to get to my shop. I got the dreaded check engine light and increased emissions warning. No limp mode, happened on a cold engine for the first time today about 2 mins after second start up of the day. Engine runs fine from a sound and performance perspective at this time. I suspect bad o2 sensor in the secondary cats based on what I read. Until I get a chance to get it to the shop, is it something I should not drive the car until I get a diagnosis or is it pretty safe to drive it this way?
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11-17-2015, 04:11 PM | #4 | |
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11-17-2015, 05:16 PM | #5 | |
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Yes, lights on at all times is really bad for your battery.... This is why we in countries where winters are harsh and it's mandatory to keep your lights on, always, everyone has their car hooked up to a charger and replace the battery every two months. Just keep your lights on, will ya? People around here don't need any more crazy ideas for leaving their lights off. If your battery gets in trouble by charging your phone it will have very serious problems getting your car to run.
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11-18-2015, 10:24 AM | #6 |
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Thanks all. My battery is 7 months old. In the shop now, will let everyone know what happens once I get more detail.
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11-19-2015, 03:57 PM | #7 |
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It was a stuck open thermostat.
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11-19-2015, 07:24 PM | #9 |
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Codes pointed to that and once checked it was confirmed. I don't have the codes now, but will possibly get tomorrow when I pick up my car. I was really expecting an o2 sensor so this was a surprise. As we know this can be a nagging problem so lets hope its fixed this first time.
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11-22-2015, 06:15 AM | #10 |
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heres the code:
2B59 - P0128
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11-22-2015, 08:02 AM | #11 |
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Hmmm, almost can't believe it.
If no code pointed toward's the thermostat, then this sound's like an common method to press money out of you. Today it's the thermostat... Oh wait... CEL again Then it's the EGR valve CEL again Then we might swap the windshield wiper's CEL again Oh how about TBA,s ? Yeah let's do this! CEL.... get yourself an OBD2 reader otherwise, you can honestly call yourself one of the great supporter's of your stealership. |
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11-22-2015, 08:18 AM | #12 | |
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What is the world are you talking about? The code as I said points to thermostat and the problem is now gone. It was all of $200 to fix. I dont even use a dealer. You are out of line. Here is the code description: 2B59 - P0128 Information saved in DME Fault code 2B59 - P0128 Fault text Coolant thermostat monitoring Fault description Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) Condition for fault identification Test condition: For the period K_TMOT_OBD_DIFF_T_DELTA the sensor deviates from the model by more than -25° Kelvin (K_TMOT_OBD_DIFF_HIGH)… . Terminal condition: Engine running . Voltage condition: None Condition for fault memory entry Once during warm-up phase Action in service 1. Replace thermostat . 2. Perform electrical check on coolant sensor and replace as indicated Fault effect and breakdown warning Engine warms to normal operating temperature very slowly / ineffective interior heating / MIL on after engine runs 2x Driver information Warning light: MIL Service instruction None
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11-22-2015, 08:19 AM | #13 |
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My guess is the OP did not have a code reader. He simply got the Idrive message for increased emissions, which could be a side effect of cold running. Had he pulled the codes and gotten 2B59, then he would have known it was a thermostat issue. There is a code list thread you can review.
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11-22-2015, 08:30 AM | #14 | |
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Calm down, we're all just human Last edited by vsix; 11-22-2015 at 01:21 PM.. |
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11-23-2015, 06:41 AM | #15 |
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Yes, the OP stated in Post #1 that he does not have a code reader. The only notice he had, therefore, was the idrive or check control, which offers very limited feedback. That is what said increased emissions. Some good guesses as to what that could mean, but guesses are not a substitute for reading the actual codes.
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12-16-2018, 06:03 PM | #16 |
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I just had this happen to my E92 M3 this week with the "increased emissions" on the Idrive and yellow engine symbol and when I hooked up the scanner it showed P0128. I checked my coolant level and it was on the low end, so I topped it upped with coolant and distilled water and reset the code. No new code since and the car runs great, so am I just lucky or are some people changing thermostats just because the garage says so? I hope this may help.
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12-17-2018, 07:04 AM | #17 |
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I replaced the thermostat and it went away. No issue ever since and its been 3 years now. But my fluid was not low. If it was low certainly start there.
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12-17-2018, 09:44 PM | #18 |
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who makes a good code reader? Same issue as above ?
Im getting the same emissions reading on my 2009 E92. The car has Bimmerworld long tubes and catted x pipe,EPIC tune. I know the cats have been replaced one time a couple of years ago, and may be on there way out? Pure speculation though without a code reader. The car runs great, and is enjoying the cooler Az weather we are having here. Does take a long time to come up to temp though. Im new to Bmw's sorry to say. Next step is to get a code reader. Anybody have a idea to affordable code reader? Any suggestions would be awesome. Sorry if this the wrong thread to ask this question.
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12-23-2018, 06:45 AM | #19 | |
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Quote:
youcanic.com/guide/bmw-obd2-scanners
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12-23-2018, 11:56 AM | #20 |
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I had this too and it was the thermostat.
The best part was the Service Advisor told me it was going to be $1,4xx to fix and he could cut it down to $1,1xx since I've been going to him for years. Then he go BMW to cover it under the Emissions warranty! Winning.
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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12-02-2020, 12:41 AM | #21 | |
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Seems a bit expensive... Am I missing something? |
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12-03-2020, 07:42 PM | #22 | |
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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