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Fuel Tank Pressure Sensor location? (Already searched the usual locations)

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5.1K views 4 replies 3 participants last post by  Wheelr  
#1 · (Edited)
TLNR: Location of Fuel Tank Pressure Sensor? (asking for a friend)
1999 E320 4Matic Wagon

Background
Addressing a P-code (can't recall) that was specific to the Fuel Tank Pressure (in real world - the fuel gauge is sluggish and occasionally does not read full)
Checked
1 Beneath rear seat,
2 Beneath floor mat in trunk
3 Directly beneath the fuel cap and the
4 Ancillary fuel parts behind the tank (no pic)

Could sensor have been removed?
Does this E320 Model/yr come with one?
TU

First row back seat (just this on the left, parking brake in the center, battery, fuses & air suspension on the right)
Image



Notion of where I anticipated sensor to be located.
On top of Fuel Pump (location: center of second row of rear seats/trunk)
*** Note: Vehicle has a single gas tank (I believe some models - diesel??? have two)
Image



Well directly beneath the fuel cap
Image
 
#3 · (Edited)
I orig suggested it was beneath that quarter-sized, circular, plastic ring
I think my buddy is afraid of spiders (cobwebs strands)

I've been a Benz owner for 6yrs and cannot remember the last time I referred to that source.
Thank you Witek_M for providing the link with the specific info.
 
#5 ·
Deplore, I interpreted Witek's image as a generic to visit the link and scroll down
But appreciate the heads-up.
Image below (sedan) confirmed what E320 Buddy sent in second pic above, though as you clarify, it's in that 3rd row on a Wagon.
I sent the info to E320 buddy but he's apprehensive about removing that circular plastic; concerned he will break/crack it.
Lead a horse to water...
TU


Image
 
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