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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm}

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Old Wed, Mar-22-2017, 08:16:59 PM   #1
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Default P0025 intermittent error


Hoping someone can help me with a P0025 error my obd reader gave me.

I'm having issues with an engine warning light and limp mode down to 4.5k revs. This has maybe happened 12 times in 4 months of daily use. Every single time its happened has been within a minute of the cold start finishing and always the first time it's started that day. As soon as I switch the engine on and off all the codes and limp mode clears and it drives ok.

Most of the time the above occurs, but also more in cold weather, there is a really high pitched frequency type noise. I can only ever hear it at idle. Sounds exactly like this but does get much much quieter as the engine warms up

I took it to a mechanic the other week who replaced the battery and recoded it. Took about 3 weeks to come back.

Anyone had similar issues? Car feels fine to me, no obvious power loss. Really weird that it only happens first thing every time. Even longer trips during the day and evening have never once caused the fault to appear.

Thank you
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bmw m3 e92 p0025

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Discussing P0025 intermittent error in the E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) Forum - {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm} at BMW M3 (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)