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Depolution System Faulty
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Radox   
Sat Oct 03 2020, 06:35pm
Joined: Aug 27 2019
Member No: #4044
Location: Bad Bergzabern
 I got this message last week. The Citroen Workshop read the fault codes, and they are as follows:

- P0104

- P0405

- P010F

If I am correct, they are pertaining to problems with the EGR valve and the Air mass sensor.

My questions are:

1. How many EGR valves does the C6 have - one or two?

2. How many Air mass sensor does the C6 have - one or two?

3. If I change all these parts, will I notice improvement in performance, fuel economy, motor noise etc?


Thanks.
Fraunie   
Sun Oct 04 2020, 05:02pm
Joined: Dec 09 2018
Member No: #3763
Location: Stockdorf
 1. Two
2. Two
3. Probably not...

I would recommend to switch off and close the EGR-Valves...

Here for example: - Click Here -
MGmike   
Sun Oct 04 2020, 06:19pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
 These errors all originate from a rear EGR failure. The two MAF errors are caused by the EGR not doing what it is expected to. Change or clean the EGR and clear the errors. I'd be very surprised if the MAF error return.

As mentioned above you could get a remap and EGR delete to improve the performance.
Fraunie   
Mon Oct 05 2020, 09:11am
Joined: Dec 09 2018
Member No: #3763
Location: Stockdorf
get a remap and EGR delete to improve the performance.

Frankly the car is driving so much better without EGR valves and 36hp more feels just right...
 

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