Hi there,
I've noticed on my C5 X7 with DT20C - 3.0 V6 HDi FAP that sometimes I get a engine check light. After connecting to diagbox there is always a fault code in the injection/ignition calculator (I believe that it is the correct name as I have my diagbox in another language). There is always only p2175 fault code (no other fault codes in this calculator) and from the parameters of this fault I see that it is too closed.
The fault didn't always return, as it went away for a few days and then it reappeared.
As to engine behavior, when a fault code emerges, the engine starts to run marginally worse, but there is no problem with accelerating or anything else.
Shall I replace the air mixer with p/n 0345.G1?
C5 X7 3.0 HDi - p2175 fault code
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Re: C5 X7 3.0 HDi - p2175 fault code
It's either that or the electrical harness / pins at the connector.
Fault Code: | P2175 |
Description of Fault: | Air mixer /Butterfly: Position incorrect in relation to the requirement (Closed too far). The measured air flow is less than the setting for a defined time: Possibility 1: Difference of 7 % for 30 seconds Possibility 2: Difference of 10 % for 25 seconds Possibility 3: Difference of 30 % for 15 seconds Possibility 4: Difference of 50 % for 10 seconds Possibility 5: Difference of 60 % for 8 seconds Possibility 6: Difference of 70 % for 7 seconds |
Conditions for Fault to clear: |
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Downgrade Modes whilst Fault is active: |
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Symptoms: |
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Suspect Areas: |
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Marc
Marc
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Re: C5 X7 3.0 HDi - p2175 fault code
Thanks for clarification of potential suspects.
Yesterday I ordered the said air mixer as well as two sets of gaskets.
First I’m going to inspect electrical harnesses and/or inside condition of „old” air mixer. If I don't find any irregularities or causes, I will replace the air mixer.
I will post an update after this weekend.
Yesterday I ordered the said air mixer as well as two sets of gaskets.
First I’m going to inspect electrical harnesses and/or inside condition of „old” air mixer. If I don't find any irregularities or causes, I will replace the air mixer.
I will post an update after this weekend.
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- Joined: 02 Feb 2024, 20:23
- Location: Poland
- My Cars: C5 X7 Exclusive Tourer 3.0 HDi
Re: C5 X7 3.0 HDi - p2175 fault code
I am coming with good news - said problem is solved.
It was a mechanical fault as the disc inside was jumping between 4 or 5 positions when I was moving it by hand with significant force, in contrast the move in the new unit was smooth without any effort.
There were no gunk on the mechanism, so I suspect entirely mechanical failure of said disk mechanism.
Thanks for help, thread can be closed now.
It was a mechanical fault as the disc inside was jumping between 4 or 5 positions when I was moving it by hand with significant force, in contrast the move in the new unit was smooth without any effort.
There were no gunk on the mechanism, so I suspect entirely mechanical failure of said disk mechanism.
Thanks for help, thread can be closed now.
- GiveMeABreak
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- Posts: 37456
- Joined: 15 Sep 2015, 19:38
- Location: West Wales
- My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow - x 5743
Re: C5 X7 3.0 HDi - p2175 fault code
Good, thanks for the update.
Please Don't PM Me For Technical Help
Marc
Marc