DPF health check

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

Moderator: RichardW

User avatar
osx
Posts: 564
Joined: 08 Jun 2013, 20:09
x 5

DPF health check

Unread post by osx »

Where can I check the DPF condition in Diagbox? After 160k miles it must be getting clogged.

User avatar
GiveMeABreak
Forum Admin Team
Posts: 20000
Joined: 15 Sep 2015, 19:38
x 1958

Re: DPF health check

Unread post by GiveMeABreak »

In the engine ECU.

It should provide you with current soot loading, estimated amount of additive (in weight) dumped into the filter and estimated quantity of additive remaining.

Soot loading is only relative until the next regeneration when it gets burnt off. Additive remaining is also estimated - not measured.

As for the filter itself, the official life expectancy is 120k miles. Obviously life can increase depending on individual driving conditions.

User avatar
osx
Posts: 564
Joined: 08 Jun 2013, 20:09
x 5

Re: DPF health check

Unread post by osx »

Will have a look

User avatar
GiveMeABreak
Forum Admin Team
Posts: 20000
Joined: 15 Sep 2015, 19:38
x 1958

Re: DPF health check

Unread post by GiveMeABreak »

You'll get a message when it's at risk of blocking anyway.

User avatar
osx
Posts: 564
Joined: 08 Jun 2013, 20:09
x 5

Re: DPF health check

Unread post by osx »

I had a scary moment when the engine cut-off suddenly while i was cruising - Depollution message came on, the engine oil pressure and i think one more. Pulled over and restarted the engine - no messages or warning lights. Second time it has happened in one year. On both occasions I was driving, low speed and revs.

User avatar
EDC5
Donor 2020
Posts: 1186
Joined: 01 Jul 2017, 21:48
x 95

Re: DPF health check

Unread post by EDC5 »

Did you get any stored fault codes after the engine cut out?

User avatar
osx
Posts: 564
Joined: 08 Jun 2013, 20:09
x 5

Re: DPF health check

Unread post by osx »

Will have a look but I expect there will be plenty

User avatar
osx
Posts: 564
Joined: 08 Jun 2013, 20:09
x 5

Re: DPF health check

Unread post by osx »

Managed to find the DPF data (41% full?). The faults are at the last attachment.
Capture3.JPG
Capture2 (1).JPG
Capture (1).JPG

User avatar
GiveMeABreak
Forum Admin Team
Posts: 20000
Joined: 15 Sep 2015, 19:38
x 1958

Re: DPF health check

Unread post by GiveMeABreak »

You can realistically ignore the P1351 error - just about every HDI has this. It's just the common glow plug fault.

The DPF data 41% PEFload is just telling you the current status of the soot loading. That will increase upwards until it's time to regenerate and will drop back off again.

As for P0215:
Fault Code: P0215 - Supply relay control - short circuit to earth or short circuit to positive or open circuit

Description Main Relay Stuck

Conditions for Fault to clear: The following conditions have to be met:
- Engine idling (For several seconds)
- Engine cut following a phase in which the engine management ECU becomes dormant

Downgrade Modes whilst Fault is active: None

Symptoms: Starting Problem

Suspect Areas:Engine fuse box, Electrical harness, Connector
So this is likely to point to the fuel supply relay - which is contained in the engine fuse box. The relays are not really user serviceable, so the whole fusebox is generally replaced. You might find that it behaves for a while, but may start getting progressively worse - other symptoms can include cutting out / hesitation whilst driving.