[instan]

I have a 2010 335d the will sometimes start but struggles to start and most of the time will die out. After one or two tries it will just crank and not fire at all. It seems to start after it has sat for a hour or so but again it struggles to fire up. There is also a ticking noise that seems to be coming from behind the exhaust pressure sensor which I recently replaced because it had been burnt through. Once that car is started it seems to run fines and does not stall. I feel like the the turbos are not spinning up and I am getting poorer gas mileage although I could be imagining that. Could this be fuel filter or pump or glow plugs? Here are the codes I am seeing. Any help is greatly apprectaited.

Code P040C indicates a fault period in the the Exhaust Gas Rectrculation Temperature Sensor 'A' electlical circuit for a for a period of time
------~------------ --·-----------
Error Codes Read
P040C Exhaust Gas Recirculation Temperature Sensor "A" Circuit
P14A6
P21A9
P2063 Reductant Supply Control Circuit Low
P2064 Reductant Supply Control Circuit High
P244A Diesel Particulate Filter Differential Pressure Too Low Bank 1
P0685 ECM/PCM Power Relay Control Circuit/Open
P208E Reductant Injection Valve Stuck Closed Bank 1 Unit 1
P20BD Reductant Heater "8" Control Circuit/Open
P202A Reductant Tank Heater Control Circuit/Open
P040C Exhaust Gas Recirculation Temperature Sensor "A" Circuit
P14A6
P21A9
P2063 Reductant Supply Control Circuit Low
P2064 Reductant Supply Control Circuit High
P244A Diesel Particulate Filter Differential Pressure Too Low Bank 1
P0685 ECMIPCM Power Relay Control Circuit/Open
P208E Reductant Injection Valve Stuck Closed Bank 1 Unit 1
P20BD Reductant Heater "B" Control Circuit/Open
P202A Reductant Tank Heater Control Circuit/Open
P0101 Mass or Volume Air Flow Circuit Range/Performance
P007B Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 1
P040B Exhaust Gas Recirculation Sensor A Circuit
P040C Exhaust Gas Recirculation Temperature Sensor "A" Circuit
P14A6
P21A9
P2002 Particulate Trap Efficiency Below Threshold Bank 1

[instan]

Also if anyone can recommend a BMW diesel mechanic in the Rockville/Gaithersburg area of MD I would really appreciate it.

[smass]

Check ground straps from the engine to the body. And check for melted wire insulation in the area the sensor was burnt.

And you may get better responses from the M57 engine forum. https://www.e90post.com/forums/forumdisplay.php?f=377

[lnxguy]

Joint the BMW North American diesel owners group on Facebook. You'll get shop recommendations way faster then on here.

[instan]

The insulation on the harness just below the sensor is melted but none of the wires seemed to be damaged. Could that be the problem? Do I need to replace the whole harness? Can I wrap it with something? Thanks for the feedback!!!!