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Engine anti pollution system alam
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Author Post
Rog   
Tue Aug 13 2013, 05:21pm
Hi all
I have had this appear today, wondered if there were any previous experiences of it

Thanks
Rog
C6Dave   
Tue Aug 13 2013, 06:25pm

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
 What exactly was the message?
Website
Rog   
Tue Aug 13 2013, 06:33pm
Pop up message is 'de pollution system faulty'.
Alert log reads 'engine anti pollution system faulty'
C6Dave   
Wed Aug 14 2013, 06:18am

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
 Well that is simply a 'generic' message and could relate to lots of things so you need to read the error log with an OBII code reader (preferably 'Lexia') to try and narrow things down
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Rich   
Wed Aug 14 2013, 08:12am
Joined: Jul 10 2011
Member No: #542
Location: Bournemouth
 Had this 3 times with my ex's C4 and it turned out to be a faulty brake switch. They cleaned the diesel particulate system out the first two times that cleared the message but it always came back and the brake switch finally did the trick. Do you find your cruise control doesn't work now?
gmerry   
Wed Aug 14 2013, 10:26am
Joined: Dec 11 2009
Member No: #21
Location: Scotland
 Hi Rog, anecdotal swops across the internet will not help you solving this one.

Take Dave's advice and get proper diagnostics via Lexia or Diagbox (Citroen dealer) before deciding on where to start looking for faults.

Cheers
G
C6Dave   
Wed Aug 14 2013, 11:03am

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
 Try and see if there is an 'Independent' near you: - Click Here -
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Rog   
Wed Aug 14 2013, 11:50am
Thanks all.

Interesting point re. cruise, I'll try it when out next.

I have an ex main dealer very close by with Lexia. I used them for my USB box to tell the system it was there etc. Mixed feelings, they were very friendly and quoted price for plugging in wasn't extortionate. After telling lexia it was installed, it failed to work properly [i]. They were quick to tell me the box was faulty, but on the plus side they didn't charge me anything, so I'll give them another go. [and tell them about unplugging the cd player at source!!]
gmerry   
Wed Aug 14 2013, 11:55am
Joined: Dec 11 2009
Member No: #21
Location: Scotland
 The cruise thing will more than likely be a red herring. Forget it and go with the science based approach.

Regards
Gerry
Rich   
Wed Aug 14 2013, 05:17pm
Joined: Jul 10 2011
Member No: #542
Location: Bournemouth
 I'm not so sure it will be a red herring! Just based on my experience, each time that message came up, the cruise control also failed. Once it was correctly diagnosed as the brake switch, the message disappeared and the cruise control worked fine. 3 times that happened...

But yes, get the Lexia to do the work for you as it will be more accurate!!
Rog   
Thu Aug 15 2013, 02:03pm
Well, here's an update. Started her up this morning, alarms still present. ran a few errands, [cruise control fine!] then went to garage. Chap initially popped out with a portable reader, but gave an unknown code. He drove it round the back to plug in, jumped out of car to make some space in workshop, i suddenly realised alarm had gone! Typical. Anyway, stored alarms were:
Temp fault
EGR electric valve position 2 [front]. Electrovalve blocked.

Permanent fault
Flowmeter signal 2 [front]. excessive flow detected

Temp fault
Air flowmeter signals. consistency between the 2 air flowmeters

Permanent fault
Brake switch signal. Switch not functional.

All alarms cleared, so will suck it and see for now.

Hats off again to the garage who once again didn't charge me, so i contributed to their biscuit fund!
Rog
Hattershaun   
Thu Aug 15 2013, 04:16pm
Joined: Dec 19 2010
Member No: #320
Location: Bedfordshire, UK
 When the EGR valve failed on my car I had stored ECU faults relating to airflow meter, the same as you.
That's not to say there aren't other reasons for the fault code to be shown.
Best of luck searching for a resolution.
 

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