CEL
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What have you done to the car's emissions system?
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635 Posts
Am i the only person who read this as "PC load letter? wtf does that mean?"
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serious question is serious though...a failing o2 sensor can cause this. BMW's have this problem when the o2 sensor is still within spec enough to not throw a code, but will cause the car to run rich or lean enough to throw one.
serious question is serious though...a failing o2 sensor can cause this. BMW's have this problem when the o2 sensor is still within spec enough to not throw a code, but will cause the car to run rich or lean enough to throw one.
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3,633 Posts
I get that occasionally as well. Usually just goes away.
Do you have an aftermarket downpipe?
Do you have an aftermarket downpipe?
It's stock currently
My idle blips a little somtimes. It can drop a few rpm, or rev a few rpm depending on it's mood.
I have also been getting a TON of backfire lately. Which is fine with me
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3,633 Posts
Weird.
Wonder if oil on the sensor could cause that?
Wonder if oil on the sensor could cause that?
Take your shop to a dealer. Emissions warranty will apply.It's stock currently
My idle blips a little somtimes. It can drop a few rpm, or rev a few rpm depending on it's mood.
I have also been getting a TON of backfire lately. Which is fine with me
Or, get the actual VIDA codes which provide you with more details of the actually issue (upper limit, permanent fault, etc). Your generic codes are useless.
So, what you're saying is that this is something that will be replaced/fixed for free by the dealer because of some emissions warranty/law or some crap?
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4,477 Posts
Little bit of hatin
Maybe he should attend the Player Hater Ball
Maybe he should attend the Player Hater Ball
I was getting the opposite message a few weeks ago: system too lean at idle speeds - Bank 1. Turns out when it took it to the dealer, it was a long term fuel trim code. When they troubleshooted it, they found some hose or something under the intake had come loose. Problem solved. YMMV
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194 Posts
This was very helpful. YMMV.
Your mother's meaty vagina?
That or, your mileage may vary. I think it's the first though...
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170 Posts
A loose/cracked vacuum hose will cause a system too lean code. System too rich is usually a bit more complicated - that means that the car is reading too little oxygen in the exhaust stream and is trying to lean out the mixture to compensate.
And backfiring is bad on your catalytic converter - it means that unburned fuel is making it's way through the exhaust and when it hits the atmosphere, it ignites. Unburnt fuel will ruin a (very expensive) catalytic converter.
You might have an injector that isn't closing all the way and leaking fuel - the fuel gets pushed out during the exhaust cycle and could be causing the backfire. That or a spark plug is fouling up and not burning the entire mixture. I'd get this serviced quickly as you could be damaging critical engine components.
And backfiring is bad on your catalytic converter - it means that unburned fuel is making it's way through the exhaust and when it hits the atmosphere, it ignites. Unburnt fuel will ruin a (very expensive) catalytic converter.
You might have an injector that isn't closing all the way and leaking fuel - the fuel gets pushed out during the exhaust cycle and could be causing the backfire. That or a spark plug is fouling up and not burning the entire mixture. I'd get this serviced quickly as you could be damaging critical engine components.
Spark plugs and cats aren't really that expensive for me. It won't harm anything else... I've got a spare stock cat, and an aftermarket 3" that I can use which is pretty cheap. Spark plugs are dirt cheap lol
I'm going to swap spark plugs anyway, throw some seafoam in, and probably buy a new o2 sensor.
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3,157 Posts
What is your long term fuel trim value?
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