[J3NGOe90]

Hello everyone, so I had oil level Inactive and changed the sensor, and it's still Inactive after I changed the sensor and plus this code P2E7C : Bit serial data interface, signal.

Please help, what could it be.

[mankytron]

The alternator, oil level sensor, water pump, and intelligent battery sensor all communicate on the bit serial interface. Maybe check/clean connections of all those . I am have some bsd codes also but have not checked anything yet

[Bavarian Tech]

Originally Posted by mankytron

The alternator, oil level sensor, water pump, and intelligent battery sensor all communicate on the bit serial interface. Maybe check/clean connections of all those . I am have some bsd codes also but have not checked anything yet

This , I've seen a N54 water pump fry the BSD line, taking out the IBS and the DME along with it. I would check the water pump connection, for signs of corrosion/coolant. Check the ground points on the valve cover

[J3NGOe90]

any more ideas people?? alternator wires look good. And why would alternator wire make my oil inactive, wouldn't everything stop working if alternator ground wire is loose....

[Bavarian Tech]

The alternator is controlled on the BSD line along with the Water pump & IBS, DME, oil level sensor. Did u check the water pump ? IBS ? How did you check the wire ?

[J3NGOe90]

Originally Posted by Bavarian Tech

The alternator is controlled on the BSD line along with the Water pump & IBS, DME, oil level sensor. Did u check the water pump ? IBS ? How did you check the wire ?

bro I opened up new thread about it, can you take a look, I would appreciate it.

http://www.e90post.com/forums/showthread.php?t=1149542