Hi there,
Not exactly on the 1 series platform, but its N54 related. My 335i started to play up just short of 2 weeks ago... Missfire, limp mode, shuddering and just running like a bag flashing DSC/DTC faults up on the screen.
Read the faults and had 30BA, great DME Mosfet failure. Had the MOSFETS done and shes still playing up.
Prior to the MOSFETS being done, I tried several things to see if other things had failed, like changing injectors around, coil packs etc...
But each code clear and re-read kept coming up with more codes. These are as followed:
Fault Code read 1:
30BA - Dreaded DME code
29CF
29CE
29CC
2C77
Clear them and carry out Fault Code read 2:
30BA
29CF
29CE
29CC
2C77
2E30
2E18
30A0
2C3B
30A1
Clear them and carry out the third fault reading:
30BA
29CF
29CE
29CC
2C77
2E30
2E18
30A0
2C3B
30A1
29CD
29D9
As you can see the problems were getting progressively worse and I knew for sure the MOSFETS must had been dead. So removed the ECU and low and behold injector 1 MOSFET was dead, so got a PCB repair guy to change to MOSFET and put it back in the car.
Go and continue with the job this morning and now I'm flowed with these codes:
30A1
2EC1
30AB
2E30
2E31
This is where it can get a little interesting as the 2E3x is input signals for injectors, well it sometimes flashes up Cylinder 1 and 2, then sometimes flashs up 2 and 3. But I've even tried swapping the injectors over on each back and see if the faults jump to the next bank but stay there, I've swapped coil packs around and even swapped the plugs over on the o2 sensors just incase that was causing the issues. But have just stayed with those codes.
2EC1 is a missfire on cylinder 5, which Ive swapped a coil over for cylinder 6 with plug to see if would jump but remains on cylinder 5.
Also done test readings on HPFP and that will run to 99.6 to 99.7%. Have done a reading on the throttle valve though and when I activate that to 99% it only goes to 80.8%?
Anyone else had a headache like this and could maybe point me in the right direction as its showing the injectors are fine, other than maybe a wire lose? I've even checked the pins on the DME and they're also all fine. I'm just hoping the DME isn't completely shafted?
If someone could give some guidance on this would be much appreciated as my brain is frazzled.
Not exactly on the 1 series platform, but its N54 related. My 335i started to play up just short of 2 weeks ago... Missfire, limp mode, shuddering and just running like a bag flashing DSC/DTC faults up on the screen.
Read the faults and had 30BA, great DME Mosfet failure. Had the MOSFETS done and shes still playing up.
Prior to the MOSFETS being done, I tried several things to see if other things had failed, like changing injectors around, coil packs etc...
But each code clear and re-read kept coming up with more codes. These are as followed:
Fault Code read 1:
30BA - Dreaded DME code
29CF
29CE
29CC
2C77
Clear them and carry out Fault Code read 2:
30BA
29CF
29CE
29CC
2C77
2E30
2E18
30A0
2C3B
30A1
Clear them and carry out the third fault reading:
30BA
29CF
29CE
29CC
2C77
2E30
2E18
30A0
2C3B
30A1
29CD
29D9
As you can see the problems were getting progressively worse and I knew for sure the MOSFETS must had been dead. So removed the ECU and low and behold injector 1 MOSFET was dead, so got a PCB repair guy to change to MOSFET and put it back in the car.
Go and continue with the job this morning and now I'm flowed with these codes:
30A1
2EC1
30AB
2E30
2E31
This is where it can get a little interesting as the 2E3x is input signals for injectors, well it sometimes flashes up Cylinder 1 and 2, then sometimes flashs up 2 and 3. But I've even tried swapping the injectors over on each back and see if the faults jump to the next bank but stay there, I've swapped coil packs around and even swapped the plugs over on the o2 sensors just incase that was causing the issues. But have just stayed with those codes.
2EC1 is a missfire on cylinder 5, which Ive swapped a coil over for cylinder 6 with plug to see if would jump but remains on cylinder 5.
Also done test readings on HPFP and that will run to 99.6 to 99.7%. Have done a reading on the throttle valve though and when I activate that to 99% it only goes to 80.8%?
Anyone else had a headache like this and could maybe point me in the right direction as its showing the injectors are fine, other than maybe a wire lose? I've even checked the pins on the DME and they're also all fine. I'm just hoping the DME isn't completely shafted?
If someone could give some guidance on this would be much appreciated as my brain is frazzled.
