Codes P0300, P0303, & P0304

wdlfbio · 12-22-2013, 07:43 AM

So, I'm getting on the freeway, hit the throttle hard to pick up speed, and I get the reduced power display and SES light. Limp her home and plugged in the code reader. Cylinders 3&4 are misfiring. Already have an appt at BMW for Thursday, but I'm wondering if there are some common fixes other than bad coils or plugs? Loose wires? Which are cylinders 3&4?

Basil335i · 12-24-2013, 08:37 PM

It's your coils I had that problem too I switched out coil number 1 4 6 so far and the other ones are fine

wdlfbio · 12-25-2013, 01:05 AM

It's going to be fun driving it 25 miles to the dealer Thursday morning... I hate getting passed by every other car on the road

7786 · 01-21-2014, 10:26 PM

Did you ever get this resolved? I just got codes P0303, P0305, P0302 & P0300 this morning, car barely runs. I'm guessing its the coils but I'm having a hard time believing 3 of them went out at the same time. I would swap the coils to test but the weather has been terrible this week and my car is parked outside.

wdlfbio · 01-22-2014, 06:51 PM

Yeah, they actually found an intake leak and had to replace a gasket. I'll try to find the service slip and see exactly what it was.

Aeronotix · 06-23-2021, 03:21 PM

Hi,
Any conclusion what caused the troubles?

12-22-2013, 07:43 AM	#1
wdlfbio Captain 68 Rep 796 Posts Drives: 2013 4S, 2015 3500 HD Dually, Join Date: Dec 2006 Location: Maple Valley, WA iTrader: (1)	So, I'm getting on the freeway, hit the throttle hard to pick up speed, and I get the reduced power display and SES light. Limp her home and plugged in the code reader. Cylinders 3&4 are misfiring. Already have an appt at BMW for Thursday, but I'm wondering if there are some common fixes other than bad coils or plugs? Loose wires? Which are cylinders 3&4? __________________ '16 235i '15 3500 HD Dually '13 C4S
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12-24-2013, 08:37 PM	#2
Basil335i Private First Class 19 Rep 117 Posts Drives: BMW 335i Join Date: Nov 2013 Location: Riverside iTrader: (1)	It's your coils I had that problem too I switched out coil number 1 4 6 so far and the other ones are fine
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12-25-2013, 01:05 AM	#3
wdlfbio Captain 68 Rep 796 Posts Drives: 2013 4S, 2015 3500 HD Dually, Join Date: Dec 2006 Location: Maple Valley, WA iTrader: (1)	It's going to be fun driving it 25 miles to the dealer Thursday morning... I hate getting passed by every other car on the road __________________ '16 235i '15 3500 HD Dually '13 C4S
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01-21-2014, 10:26 PM	#4
7786 Second Lieutenant 32 Rep 273 Posts Drives: 2011 535xi Join Date: Apr 2013 Location: Iowa iTrader: (5)	Did you ever get this resolved? I just got codes P0303, P0305, P0302 & P0300 this morning, car barely runs. I'm guessing its the coils but I'm having a hard time believing 3 of them went out at the same time. I would swap the coils to test but the weather has been terrible this week and my car is parked outside.
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01-22-2014, 06:51 PM	#5
wdlfbio Captain 68 Rep 796 Posts Drives: 2013 4S, 2015 3500 HD Dually, Join Date: Dec 2006 Location: Maple Valley, WA iTrader: (1)	Yeah, they actually found an intake leak and had to replace a gasket. I'll try to find the service slip and see exactly what it was. __________________ '16 235i '15 3500 HD Dually '13 C4S
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06-23-2021, 03:21 PM	#6
Aeronotix New Member 0 Rep 16 Posts Drives: Bmw 335i Join Date: Jan 2021 Location: Little Rock iTrader: (0)	Hi, Any conclusion what caused the troubles?
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