Yesterday a warning light lit on my Z3 - "exhaust emission values have deteriorated" it says in the handbook. 2 days before I changed the plugs to Denso Iridium IK20 and the car is running better than ever before, no noticeable misfire. Can I still drive the car with the waring light lit? Can you suggest any reasons for it being lit, and does it need to be reset via the OBD11 (ie by a dealer)?
I posted a couple a months ago that I was having the 'exhaust emmissions' light coming on my BMW 520i a couple of months ago......... I found a local BMW specialist who initially could not find the fault. While carrying out an inspection 2 last week he found that I had a tear in the air intake pipe. He strongly believes this would cause the light to come on.
I have had it replaced today so will know in due cause whether this is resolved. So far so good..
same problem with my 318ci coupe,few months ago the light showed up for few hours then went off. now few days ago came back on again,stayed for 2 days and now off again. just got the car read on the machine and there are2 faults, it may be the exhuast,so they got to check the exhaust system or it may be the 02orh2 cenre, cant remember what it is called. waiting for quote
Hi Had same sign coming on from my 320i, called 24hr call service on bank holiday weekend and the eng came did the check and found that the ignition coil was faulty and fixed it immediately!! that was brilliant. Hope the prob is fixed..
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it needs to go on a obd code reader/scan tool or suitable diagnostic equipment to help with this prob. could be lots of things, most likely lambda sensor faulty or catalyst fault. but could be other engine managment system fault like fuel pressure etc
That sounds like you bought big problems. Oil ights indicate low oil pressure= BIG BUCKS. I would have a qualified repair shop check it out, A shop that specializes in BMW. If you are lucky, maybe the oil sender is just bad. They can also check out the Ck eng light. But the oil light is priority one.
The Exhaust Emission Light can come on if the car is driven slowly over short distances.It will not happen on cars driven at speed. A short trip of ten miles at over 3000 revs should reset the warning light,although it may not go out for a couple of days after you have tried it . Hope this helps and saves a bill at the local dealer. JK
I bought a 2000 polo 1.4 yesterday after having an MOT. The warning lamp came on today but the car is running fine. Whether its the Lambda sensor or just the light itself is a common fault, I think garages turn off the lights to get it through the MOT then they come on again in a day or two!
it sounds like the oxygen sensor, air mass meter. check the crankcase breather pipe behind the engine ( cracks, common problem), it would be wise to have a computer diagnostic done, it will save u time and money
it will not pass the test with the light on, and if u turn off the light they will know when they test it by testing/checking the system readiness function. Go to a Kragen or an Autozone they will run the test to see what trouble code has turned the light on, it is free, post the code back here. Oh have then reset the light after the test.