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EGR, P0490, P0401
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Author Post
B1unders   
Thu Jan 18 2018, 02:58pm
Member No: #43424
Joined: Jan 22 2016
Location: Kent
 I am having a few issues with My C4 and want some help or advice. Two weeks ago I had a load of fault codes come up along with the Handbrake malfunction & ESP warnings.... I plugged in my reader and everything pointed to the EGR valve, and considering that my car has 81k on it I thought that I was a fair bet that it would need a change.
So now with a new EGR valve fitted the car drove real nice and pulled like a train. A couple of days ago I took the car out and did a journey that was longer than what I normally do. All was going well and then up pops the Handbrake, ESP and Service lights soon followed by ASR.
I was on the motorway when this came on but fortunately there were no performance issues.
When I stopped I plugged in my reader and P0490 came up again but a new one P0401.
I have put a video of this on youtube (https://youtu.be/to5xj4EucgY).
Any help would be kindly accepted.
rusky   
Thu Jan 18 2018, 04:55pm
Member No: #27768
Joined: Oct 13 2012
Location: Hove
 Has the Eolys been refilled? It needs doing every 70K miles.
1 User said Thank You to rusky for this Post :
 B1unders (24 Jan 2018 : 09:34)
B1unders   
Thu Jan 18 2018, 10:49pm
Member No: #43424
Joined: Jan 22 2016
Location: Kent
 Yes it has..... That was done at 68k.
Thanks
mopowah   
Sun Mar 24 2019, 03:57pm
Member No: #46586
Joined: Oct 24 2016
Location: CPH
 I have the same issue with a 2011 e-HDi that has 155.000 km or about 100.000 miles. Errors P0401 and P0490.
B1unders   
Sun Mar 24 2019, 04:57pm
Member No: #43424
Joined: Jan 22 2016
Location: Kent
 Hi, the problem I had was the EGR valve. Although I had replaced it, the replacement turned out to be faulty.
So far, touch wood, everything has been good.
I hope this helps?
 

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