So I have a 08 mcs with 122k, Im getting a 2783, 277F and 28AA codes. In the past 12 months I've replaced the fuel filter, fuel injectors, HPFP, all the coil packs, spark plugs and have done a carbon blasting. Ive hit a wall with these codes and have no idea where to go next. Any help would be greatly appreciated

 

There is some disagreement as to the meaning of the codes.

When I search the codes: BMW PXXXX error code; for

P2783: Torque Converter Temperature Too High; Does the transmission have enough fluid? Too much fluid? Is it of the right type of fluid? Is there a transmission cooler? Is air flow through it blocked?

P277F: P277F Misfire Cyl 2 Error. You have changed injectors, plugs, coils, etc. What about an intake air leak?

P28AA: Bypass Valve Error. This might be the key to the misfire.

You have to be sure you are using a BMW/MINI compatible OBD2 code reader that is suitable for use with your car. Error codes of the higher numbers are manufacturer specific.

 

I forgot to mention it is a manual transmission so no torque converter

 

Yep schwaben tool will pick up those specific codes, some other code readers just do the normal P codes. That one code does not make sense if you are a manual.

Maybe check the wire harness for animals that like to chew on the wires or something was disconnected or pinched?

 

I cleared the codes and the only one I keep getting is the 28AA code, from the research iv done on that code its pointing to the diverter valve. I already have the DV+ installed so im thinking the solinoid itself went bad.

 

Did a new Diverter Valve body fix this? I am having the same issues. Thanks