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internal88, BMW Mechanic
Category: BMW
Satisfied Customers: 2559
Experience:  I have an Automotive Engineering Degree and also work for an Automotive engineering company since 2003.
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The codes are the same. as before, but some times got p0303

Customer Question

the codes are the same. as before, but some times got p0303 and p0305, and after i clearing the codes runs for a minute great after the codes come up and check engine light coming up dosent drive good, some times coming up or p0301, or p0306 but mostly got both,
Submitted: 1 year ago.
Category: BMW
Expert:  internal88 replied 1 year ago.

Hello, I'm Brandon - BMW tech.

These are the misfire codes. Therefore the computer shut down the fuel injectors. This is why the vehicle is running rough.

You will need to replaced the set of ignition coils and spark plugs to fix the problem.

Expert:  internal88 replied 1 year ago.

12138616153 - This is the OE number for the ignition coils.

Please rate me positive for the prompt service, thank you!

Customer: replied 1 year ago.
the ignition coils are OEM ***********
Expert:  internal88 replied 1 year ago.

yes, you will have to replace them out with new one.

Customer: replied 1 year ago.
Customer: replied 1 year ago.
why ?
Expert:  internal88 replied 1 year ago.

You are getting a misfire code. This is a serious code that have shut down the coil.

Customer: replied 1 year ago.
i have another BMW same model and i swapped them from that car and still have same codes ?
Expert:  internal88 replied 1 year ago.

Once the computer knows you have a misfire it will shut down the fuel injector to stop any more damaged.

Expert:  internal88 replied 1 year ago.

I will opt out so another tech will help you. Please do not rate me.

Customer: replied 1 year ago.
when i starting the car running ok after cleared the codes for a minute or more and than again come up the codes and starting idling when i pressing the gas pedal working great only on low gas pedal working bad