DME 30C1 fault on a rebuilt engine

[pixiemum]

Hello I hope somebody can shed light on this for me, I purchased a BMW 3 series Mar 17, had engine rebuld about a year later.
The other day I had the red oil pressure lamp come on ,though showing normal oil levels.
Took it to my local garage they pulled a 30c1 fault off it, they did not have the equipment to check the oil pressure so I shall have to take it to another garage, will I get away with just a oil pressure valve replacement or would it be worse? I have had the oil changed since the rebuild every 6/7 months, I do less than a 1,000 miles a month.

any help please

[Touring442]

pixiemum said:

a BMW 3 series

That narrows it down!

[helix402]

Touring442 said:

That narrows it down!

Something with an N43 is my guess. Or an M10. (Not really).

[bmwmike]

helix402 said:

Something with an N43 is my guess. Or an M10. (Not really).

I was going to say n43 then saw 2017 year, so that rules out n43 i think.

One thing for BMW homogonisalationism of engine platforms is it'll eventually take the guesswork on forum questions.

Edit, maybe the OP's "Mar 2017" may be when he bought the car not the year. Love a mystery.

[pixiemum]

Hi the car is 2010, bought the car in March 2017

[bmwmike]

pixiemum said:

Hi the car is 2010, bought the car in March 2017

excellent

[helix402]

pixiemum said:

Hi the car is 2010, bought the car in March 2017

Have I won?

[ashenfie]

I think stop driving the car. Replace the oil pressure sensor and see if that fixes it, then it will be the oil pump or worse they gave you a bad engine

[Touring442]

pixiemum said:

Hi the car is 2010, bought the car in March 2017

We're almost halfway there.

Petrol, diesel, four or six cylinder....?

[pixiemum]

It is a petrol engine 4 cylinders

[Touring442]

318i or 320i then. It might be the pressure control valve behind the alternator. Does the light come on at idle after a good run when the engine is hot? If so, it may well be running too hot. An oil and filter change as well as replacing the thermostat can sort it.

[pixiemum]

Hello it is 3181 engine,, this only happened the once,I drove 15 miles to work down the motorway,the light came on as I was parking up

[RUSSELLM]

[TonyRPH]

OP goes to doctor:

"Doctor it hurts"

Doctor <shrugs> "what hurts & where"

Got to love these cryptic posts where we are left to assume exactly what car a person has.

LMAO

[g3org3y]

TonyRPH said:

OP goes to doctor:

"Doctor it hurts"

Doctor <shrugs> "what hurts & where"

Welcome to my life.

Almost always followed by:

Doctor: How long has it being hurting for?
Patient: A while
Doctor: :-/

[Touring442]

pixiemum said:

Hello it is 3181 engine,, this only happened the once,I drove 15 miles to work down the motorway,the light came on as I was parking up

Start by replacing the 'stat. If the oil light doesn't come on otherwise it should be OK.