THP Engine fault P2177 - Mixture regulation fault : Mixture too lean.

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Emirdizlay
Posts: 2
Joined: 06 Feb 2021, 22:21

Re: THP Engine fault P2177 - Mixture regulation fault : Mixture too lean.

Post by Emirdizlay »

Hello, I have the same problem (p2177)
and I have same symptoms. Did you solve this problem ?
lancia58
Posts: 665
Joined: 30 Nov 2010, 08:02
x 5

Re: THP Engine fault P2177 - Mixture regulation fault : Mixture too lean.

Post by lancia58 »

Hi,

The whole thing started after I changed the HPF ( High Pressure Fuel Pump ) . At the beginning I didn't link between the new HPF and the fault. I now understand that this may be the source for the problem. I considering replacing it to a new one.

Good luck
Emirdizlay
Posts: 2
Joined: 06 Feb 2021, 22:21

Re: THP Engine fault P2177 - Mixture regulation fault : Mixture too lean.

Post by Emirdizlay »

Have you tried replacing the oxygen sensor ?
My car is at 140,000 km and the oxygen sensor has never changed. Do you think the faulty may be due to the oxygen sensor?
lancia58
Posts: 665
Joined: 30 Nov 2010, 08:02
x 5

Re: THP Engine fault P2177 - Mixture regulation fault : Mixture too lean.

Post by lancia58 »

Hi

I didn't try. I do not know if the oxygen sensor is the problem.