Hi everyone,

I have just gotten a yellow engine check light, but the car still drivable.
After a quick check with the OBD2 reader, it displayed the following faults.

!) High engine oil plausible 33FD
2) Map thermostat shorted to ground 348F
3) O2 heating before cat disconnected 2D0D
4) O2 heating after cat shorted to GND 2D10
5) Refrigerant pump short circuit to GND 3781
6) Oil pressure control valve 3400

The fuse F03 (25A) kept blowing every time I replace a new one.
My model is a 2010 N18 R56L auto

May I know if anyone has had similar problems that I have encountered?

Thanks!

 

You have a short somewhere, you will need to clear the codes, locate and correct the short, then read if any of the codes return and go from there. Done anything recently that could have resulted in a wire getting pinched?

 

I have cleared the code using Swalben reader, and it immediately stored the fault codes again.
The only thing I did was to do an oil changed after 8 months of the car in storage. But it drives perfectly for a week before all these happened.
I suspect more to do with the two O2 sensors as they are drawing higher current for their heaters than any other sensors like Map and cam sensor.
Aircon is working fine, so I presumed no problem here.

 

The fuse that was blown was actually F02 instead of F03, my bad.

As per Bentley manual, F02 was connected to the O2 sensor after Cat, so i remove the O2 connector and insert a new 25A fuse.
The yellow CEL is now gone!
However, after 20 minutes of test driving around with the O2 unplugged, the yellow CEL came on again!
And all those fault codes listed above came back again.
This is so puzzling and annoying!

Any one experienced these?

 

While trying to troubleshoot the fuse blowing fault, i had the battery -VE terminal remove for safety.

Now it just got worst!
I reconnected the battery terminal, and the FRM is dead.
Now my car got NO turn signal, windows not working, headlight on permanently, hazard light not working, no high beam.

Loosing all my hair soon!

 

Finally found the fault, it is a short circuit in the oil pressure control solenoid that caused the F02 to blow.
Had my FRM reprogrammed, and its working fine again.