P1646 in time for Christmas....

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Dec 27, 2013 | 02:03 PM

brianxj8

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Junior Member

Joined: Dec 2013

Posts: 21

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From: North Carolina

P1646 in time for Christmas....

Merry Christmas all....
So one of the things I got for Christmas..... Aargh... Was a code that is new to me... P1646... Which I understand to be a fuel pump relay 2 for a model with a supercharger.... Which I don't have.... On further investigation... The dreaded Jaguar Dealer Service supervisor...I have been told that this is the code for a passenger side upstream O2 sensor.... RAs the car is running great.. Always dangerous...I am assuming... Even more dangerous... That it can't be a fuel pump issue. Done a hard reboot... And we cleared the codes and immediately had P1646 pending again... Your valuable insights and proposed course of action to narrow this down would be greatly appreciated.
Brianxj8

Dec 27, 2013 | 02:18 PM

RJ237

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Joined: Dec 2010

Posts: 8,836

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From: Douglasville Ga.

Just go up to the forum search engine and enter 'code P1646' and you will see that many have been there before you.
It is the upstream sensor on the left (driver) side that needs replacing.
And happy New Year.

Last edited by RJ237; Dec 27, 2013 at 02:19 PM. Reason: forgot holiday greeting.