Code P20E8

MIKEE_W

MEMBER
2016 CITROEN DS LINE
1.6L
2WD
MANUAL
40,000 MILES

The code says reductant pressure too low.

Friday, May 27th, 2022 AT 11:01 AM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

This code says that your DFP sensor needs to be replaced or the DFP tank is empty. Do you have an exhaust leak? This can cause this issue as well. The DFP sensor is on top of the fuel tank here is an image of it once the tank has been lowered. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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Saturday, May 28th, 2022 AT 10:22 AM

MIKEE_W

MEMBER
3 POSTS

Hi, thanks for your reply.

I’ve had a garage look at it and they are saying it needs a new AdBlue tank and this is a dealer only part. Do you know (roughly) how much this should cost for the part and labor. I know all garages vary but a ballpark figure so that I don’t get overcharged.

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Thursday, June 30th, 2022 AT 3:55 AM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

I'm sorry but we don't have access to this information for this car. Please let me know so others will benefit when they read this post.

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Thursday, June 30th, 2022 AT 8:26 PM

MIKEE_W

MEMBER
3 POSTS

Hi, our DS3 has now been repaired. The fault code of P20E8 ended up being a problem with the adblue tank not holding its pressure. A new one was fitted, and the problem was sorted. Wasn’t cheap though as it is a dealer only part I was informed.

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Saturday, July 23rd, 2022 AT 12:30 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Thanks for getting back to us, it helps others with the same problem. I am glad you got it fixed.

Code P20E8

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