fault code P2425

This is the Forum for all your Citroen Technical Questions, Problems or Advice.
User avatar
KennyW
Donor 2024
Posts: 2614
Joined: 17 Jan 2006, 21:22
x 163

fault code P2425

Unread post by KennyW »

Hi All,

When clearing some faults the above appeared as a permanent fault

P2425

Control of the bypass of the EGR exchanger

Open circuit.

Could this be the control solenoid valve ?

Kenny
C5 x7 2.0 HDi 160 hp Estate exclusive, moved on.
Xantia 2.0 Hdi 90hp 1999 only 189,000 and rising!!!!!!! Moved on to a new home
C3 1.4 petrol (SWMBO)
Xantia TD 1.9 Mk 2 Estate LX 1998 model over 210,000 miles now and still rising!!!!!!!!!!!!! now deceased 17/12/2010.
User avatar
GiveMeABreak
(Donor 2016)
Posts: 41989
Joined: 15 Sep 2015, 19:38
x 6961

Re: fault code P2425

Unread post by GiveMeABreak »

P2425 on this engine ECU is the control of the EGR Exchanger Bypass being 'open circuit' for 2 seconds Kenny.

It may disappear after 5 minutes but only when the engine is hot. The fault will cause the deactivation of the initialisation of the EGR valve.

Possible causes: Electrical harness, Connectors, EGR exchanger bypass control solenoid valve, EGR exchanger bypass, Fuse.
Please note, I'm no longer active on the Forum, so won't respond to messages.

Marc
User avatar
KennyW
Donor 2024
Posts: 2614
Joined: 17 Jan 2006, 21:22
x 163

Re: fault code P2425

Unread post by KennyW »

Thanks Marc,

I shall check everything over.

Kenny
C5 x7 2.0 HDi 160 hp Estate exclusive, moved on.
Xantia 2.0 Hdi 90hp 1999 only 189,000 and rising!!!!!!! Moved on to a new home
C3 1.4 petrol (SWMBO)
Xantia TD 1.9 Mk 2 Estate LX 1998 model over 210,000 miles now and still rising!!!!!!!!!!!!! now deceased 17/12/2010.
User avatar
KennyW
Donor 2024
Posts: 2614
Joined: 17 Jan 2006, 21:22
x 163

Re: fault code P2425

Unread post by KennyW »

Here is a diagram done for the Vacuum system involving the 3 control solenoids relating to C5 X7 post 12291
Scan_20200605.jpg
Kenny
C5 x7 2.0 HDi 160 hp Estate exclusive, moved on.
Xantia 2.0 Hdi 90hp 1999 only 189,000 and rising!!!!!!! Moved on to a new home
C3 1.4 petrol (SWMBO)
Xantia TD 1.9 Mk 2 Estate LX 1998 model over 210,000 miles now and still rising!!!!!!!!!!!!! now deceased 17/12/2010.
User avatar
KennyW
Donor 2024
Posts: 2614
Joined: 17 Jan 2006, 21:22
x 163

Re: fault code P2425

Unread post by KennyW »

Well changed the solenoid and cleared fault.

I've noticed the car is a little bit more responsive since the change and the fault has not returned.

Hooray one thing less thing to fix but back to the the wiring to and from the suspension ecu ( another thread).

Kenny
C5 x7 2.0 HDi 160 hp Estate exclusive, moved on.
Xantia 2.0 Hdi 90hp 1999 only 189,000 and rising!!!!!!! Moved on to a new home
C3 1.4 petrol (SWMBO)
Xantia TD 1.9 Mk 2 Estate LX 1998 model over 210,000 miles now and still rising!!!!!!!!!!!!! now deceased 17/12/2010.