Dreaded Management Light

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

User avatar
pikecrazy
Posts: 126
Joined: 23 Nov 2004, 01:05

Dreaded Management Light

Post by pikecrazy »

Well this afternoon when i turned the engine off it seemed to run on for a couple of seconds. :?

Noticed the light came on mmmmm so i pulled away but engine wouldn't rev over 2000 rpm. :cry:

Thinking it could be a fuel problem i checked filter but it was ok.

Any ideas folks
:evil:

red_dwarfers
donor 2017
Posts: 2522
Joined: 29 May 2008, 15:59
x 18

Post by red_dwarfers »

I would be tempted to say that its gone into limp home mode.
I think that generally points to dud/dying sensor, I know a member of my family had this problem a while back with their 406 HDI, that was one of the sensor.
there might be something lurking around the forum, try the search function.

nick
Posts: 1079
Joined: 14 Mar 2001, 02:49

Post by nick »

If the engine runs on it could be the pressure regulator on the high pressure pump sticking. Equally I think the pressure sensor on the fuel rail could cause the same problem.

Its quite easy to take the pressure regulator off the pump to have a look. Two torx screws to undo it, then it just pulls out the back of the pump. Be very careful not to introduce any dirt into the system though.

addo
Sara Watson's Stalker
Posts: 7098
Joined: 19 Aug 2008, 12:38
x 4

Post by addo »

For something to run on and not rev out, the other issue could be heat. Lack of water may not show on the temperature gauge... How's coolant level in the overflow tank?

Regards, Adam.

howiedean
Posts: 448
Joined: 11 Oct 2003, 13:36
x 2

Re: Dreaded Management Light

Post by howiedean »

pikecrazy wrote:Well this afternoon when i turned the engine off it seemed to run on for a couple of seconds. :?

Noticed the light came on mmmmm so i pulled away but engine wouldn't rev over 2000 rpm. :cry:

Thinking it could be a fuel problem i checked filter but it was ok.

Any ideas folks
:evil:
pikecrazy,
What did you have to do to fix your car. I noticed that you have a patched ECU, what was that done for?

Regards

User avatar
pikecrazy
Posts: 126
Joined: 23 Nov 2004, 01:05

Re: Dreaded Management Light

Post by pikecrazy »

howiedean wrote:
pikecrazy,
What did you have to do to fix your car. I noticed that you have a patched ECU, what was that done for?

Regards
It just seemed to clear itself after i removed the fuel filter :?

The patched ecu was related to the Fuel Pump I'm not quite sure what was done.

howiedean
Posts: 448
Joined: 11 Oct 2003, 13:36
x 2

Re: Dreaded Management Light

Post by howiedean »

pikecrazy wrote:
howiedean wrote:
Regards
It just seemed to clear itself after i removed the fuel filter :?

The patched ecu was related to the Fuel Pump I'm not quite sure what was done.
Thanks pikecrazy,

The new high pressure pump was a fault after this issue then? :twisted:

User avatar
pikecrazy
Posts: 126
Joined: 23 Nov 2004, 01:05

Re: Dreaded Management Light

Post by pikecrazy »

howiedean wrote: The new high pressure pump was a fault after this issue then? :twisted:
Nope well before :cry: