e46 320d DDE Light

[SonjaE]

Hi all,

So this is my first post...

Well I drive a e46 320d 2001/2002 automatic.
The problem I am having with it is the DDE Light comes on - after the light comes on the car almost chokes likes it's gonna cut out, but it doesn't it just goes in limp mode....
I can start and drive the car but in limp mode - my husband then reset the light and all is fine for a while and then just suddenly it comes on again.
We have done a basic service as we though it might be the diesel filter - but alas it's not...

I am going to drive around with the diagnostics computer from now because after resetting the error then it's fine.

I have read somewhere EGR Valve, MAP Sensor, Rail pressure regulator and inline fuel pump..... Where does one start???

 

[Donovan2412]

Hi all,

So this is my first post...

Well I drive a e46 320d 2001/2002 automatic.
The problem I am having with it is the DDE Light comes on - after the light comes on the car almost chokes likes it's gonna cut out, but it doesn't it just goes in limp mode....
I can start and drive the car but in limp mode - my husband then reset the light and all is fine for a while and then just suddenly it comes on again.
We have done a basic service as we though it might be the diesel filter - but alas it's not...

I am going to drive around with the diagnostics computer from now because after resetting the error then it's fine.

I have read somewhere EGR Valve, MAP Sensor, Rail pressure regulator and inline fuel pump..... Where does one start???

Start by cleaning the MAP sensor and the EGR Valve.

 

[Nikhil]

Been through this. It’s either one of two things, the diesel pump under the car or the in tank pump. I would replace the under car pump first. :coolShake:

 

[ChefDJ]

Been through this. It’s either one of two things, the diesel pump under the car or the in tank pump. I would replace the under car pump first. :coolShake:

This.

Same happened to my 530d. The engine isn't getting the right amount of fuel.

Replace the low pressure fuel pump, which can be bought from MD House for I think R650.

And welcome to the forum :wave: