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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Sep-24-2018, 03:28:07 AM   #11
Drewster
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Default Re: SES Code P0305?

Unplug the MAF - see if it improves in Alpha-N

If it does, it's your MAF, or you still have a vacuum leak to track down
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Old Mon, Sep-24-2018, 03:50:00 AM   #12
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Default Re: SES Code P0305?

I've got those codes a few months ago, replaced all my coils with bosch updated versions and the codes cleared/never came back for over 3k miles.
Which plugs are you running and coils?
Last time fuel filter was changed?
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Old Mon, Sep-24-2018, 08:50:38 AM   #13
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Default Re: SES Code P0305?

i cleaned the MAF again and it seemed to solve the issue for now.

I drove the car around for 30 minutes, no code. So i think I am good to go!

Thanks Everyone
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Discussing SES Code P0305? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)