1997 Jaguar XJ6 EGR Valve? -- DPFE EGR circuit low input

GOIRISH

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1997 JAGUAR XJ6

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1997 Jaguar XJ6 V6 Two Wheel Drive Automatic 94000 miles

1997 Jaguar XJ6 Vanden Plas -- the diagnostic trouble code that Auto Zone pulled is P1400, but Jaguar is not in their system. "DPFE EGR circuit low input" was the generic explanation for the code. The car is running fine, the only noticeable problem is the smell. The exhaust smell is very bitter. The only way I can describe the smell is sharp, pungent, and bitter; and kind of like something is burning. I can smell it right when I step out of the car, even after only driving a few miles. What could this be? I'm thinking about changing the EGR valve but don't even know if this could be the culprit. Please give me some ideas on what it could be. THANKS

2 Replies

JAMES W.

MECHANIC
2,394 POSTS

Have EGR and EGR position. The smell, like rotten eggs, can be caused by a malfunctioning EGR

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Monday, October 6th, 2008 AT 6:55 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

The P1400 code are issues with the differential pressure feedback electronic sensor. This code can be caused by a clogged catalytic converter. Here is a guide to help check the cat performance.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Also, I would replace the EGR and the function sensor as well. Please clear the codes once completed. Check out the images (below). Please let us know what happens.

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