Question about 1999 BMW Z3

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BMW Z3 rough idle on start codes read P1189 , P0173

BMW Z3 rough idle on start codes read P1189 , P0304(cyl 4 misfire) ,P0306(cyl 6 misfire), P0305(cyl 5 misfire) ,P0173....cleared the codes and the idle immediately went to normal.

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All the codes you have are all related to the fuel trim, this problem needs to be looked at with a european capable scanner for futher tests sorry.

Posted on Dec 05, 2009

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Just got there codes for my 2000 323I P1250 P1188 P1189 P0304 P0173 P0170 It pass the test,anyone have any ideas ???


P0304 = #4 cylinder misfires
P0170 = Fuel Trim, Bank-1
P0173 = Fuel Trim, Bank-2
P1250 = this is invalid code for BMW
P1188 = Fuel control, bank-1, sensor-1 (pre-cat sensor)
P1189 = Fuel control, bank-2, sensor-1 (pre-cat sensor)
Vacuum leaks and/or sensor defective for the issues of the codes.
This error codes really need parts to replace. But you have to replace the thermostat first. Then clear the codes and see if any reappears,then replace defective part/s

May 01, 2012 | 2000 BMW 323

1 Answer

1999 Ford Taurus 3.0L V6 24V DOHC Duratec Engine Engine was misfiring, plugs replaced, KAM erased, Idles Slow and Rough. OBDII says misfire ocurring on cyl 4 & 5. Codes P0300, P0304 and P0305


i would check the plug wires and the coils you check the plug wires for bad spots at night start the motor up and look at the plugs if you see a spark arch out the wire and to a peace of metal then the plug wires need to be replace.

Dec 16, 2010 | 1999 Ford Taurus

1 Answer

Codes: P0304 - Cyl 4 misfire P0170 - fuel trim malf B/1 P0173 - fuel trim malf B/2 P0300 - random - multiple cyl misfire P0105 - manifold absolute pressure/barometric pressure circuit malf P1524 -...


This realy sounds like a fuel problem filter or the pump you are getting to many codes at once and all of these sensor can,t be going bad at the same time Looking at the random misfire and the fuel trim issues map and air charge all at the same time is unlikely The olny other thing you may wan,t to check is the crankshaft pisition sensor but aren,t getting that code so im thinking fuel delevery good luck

Dec 02, 2010 | 2001 Mazda Millenia

1 Answer

Check Engine Light coming on


get the soft ware up grade. and have the coils checked.

Mar 03, 2010 | 2002 BMW Z3

1 Answer

Help 10 codes on 323i! p0150 p0170 p0300 p0306 p0305 p0304 p0173 p1188 - Fuel Control(Bank 2 sensor 1) p1188 - Fuel Control(Bank 1 sensor 1) It doesn't effect my normal driving, my idle is little bit...


These codes will have to be cleared and the car driven through a drive cycle, maybe a couple of times, is the check engine light off? Also you should check your MAF sensor it may need to be cleaned or replaced and makes sure there are no holes in your intake tubing. Hope this helps, let me know.

Dec 15, 2009 | BMW 323 Cars & Trucks

1 Answer

Just got there codes for my 2000 323 and it didebt pass e test...p1250 p0173 p0170 p1189 p1188 dose anyone have any idea???


p1188: Fuel Control (Bank 1 Sensor 1)
p1189: Fuel Control (Bank 2 Sensor 1)
p0171 and p0173: These are very common codes on BMW's which can also be false codes, try clearing the codes and run the test again they may not come up again.
p1250: Never came across that....

Nov 25, 2009 | BMW X3 Series Cars & Trucks

1 Answer

1998 BMW Z3 2.8 Idles rough when cold starting in wet weather


the problem could be in air mass flow sensor, but it's expensive

Jul 04, 2009 | 1998 BMW Z3 Roadster

1 Answer

1998 BMW Z3 1.9 Cylinder misfire codes. Rough on cold wet starts


Spark plug wires may be the cause. for cold damp start issues water is a conducter and will send spark directly to an engine ground not through spark plugs. also look for oil in spark plug wells this can also cause a misfire under certain conditions.

Aug 12, 2008 | 2002 BMW Z3

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