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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 01-30-2011, 12:19 PM
quickspoolsr quickspoolsr is offline
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Location: iowa
Join Date: Jan 2011
Posts: 1
Mein Auto: 99 323i
e46 323i Not running right

My car is a 99 323i, its an automatic with 200,000 miles. When it is cold it takes forever to get warmed up, and while its warming up it idles rough and dies a lot, and after warming up it runs almost perfect. I had the codes checked and there are a ton of error codes. they are

p1750 Secondary pressure solenoid
p1751 Secondary Pressure Solenoid
p1748 Transmission control module self test
p1749 Secondary Pressure Solenoid communication error
p0705 Transmission range circuit
p0727 Engine speed sensor circuit No Signal
p0731 Gear 1 Ratio incorrect
p0734 Gear 4 Ratio incorrect
p1747 CAN Bus Monitoring
p1748 Transmission Control Module self test
p1770 CAN Torque Interface
P0705 Trans Range sensor circuit malfunction
p0753 Shift selenoid A circuit electrical
p0758 shift selenoid B circuit electrical
p0763 shift selenoid C circuit electrical

I recently replaced the battery, spark plugs and fuel filter. I also had the transmission fluid level checked and it is fine. the trans shifts just fine. Im thinking it might be something electrical. can anyone give me some advice as to where to go from here?
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Old 01-30-2011, 07:26 PM
marinekilz's Avatar
marinekilz marinekilz is offline
Noone Special
Location: Bronx, NY
Join Date: Jul 2010
Posts: 673
Mein Auto: 01 E46 330 xi
well no two cent is the only fault I see that isn't related to the trans is the crank sensor
01 E46 330Xi
06 E92 328i ZSP
07 E92 335i ZSP

E9 One Day It Will Be Mine
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Old 02-17-2011, 08:09 PM
Registered User
Location: NEW JERSEY
Join Date: Feb 2009
Posts: 28
Mein Auto: 323I BMW
Make shure that scan socket under the hood by the pasenger side wall is not loose that will cuase errors
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