Fuel pressure code P2540?

Tiny
BHAMDOC1
  • MEMBER
  • 2008 MERCEDES BENZ E63 AMG
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
It had few codes that could be related or not, I deleted all to see what stay, you can drive it with check engine light off till you start it again. The only code that came back is P2540:LOW PRESSURE FUEL SYSTEM SENSOR CIRCUIT RANGE/PERFORMANCE
Friday, January 9th, 2026 AT 9:49 AM

5 Replies

Tiny
BHAMDOC1
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Here us a video if that helps
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Friday, January 9th, 2026 AT 10:48 AM
Tiny
KEN L
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Yep, 9 times out of 10 it will be the sensor which is located at the tank on top of the low pressure fuel pump. Other possibilities are the fuel check valve is stuck open, the low pressure fuel pump is bad, or you have water in the tank (rare). Here is the location of the low pressure sensor so you can swap it out and then clear the codes. Luckily there is a trap door for the fuel pump. Check out the images (below). Please let us know what happens.
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Friday, January 9th, 2026 AT 12:07 PM
Tiny
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Do you know the part number if it's not too much trouble plz
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Friday, January 9th, 2026 AT 12:32 PM
Tiny
KEN L
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Sure here is the part number for the low pressure fuel pump pressure sensor.

Bosch (1561530028) Fuel Pressure Sensor

Clear the code once completed, Ken
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Saturday, January 10th, 2026 AT 9:09 AM
Tiny
BHAMDOC1
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Seems like this one maybe at the wngine side. I thought we were talking about the one on too of fuel tank? Cause this one has bolts and in some sites says on fuel rail
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Saturday, January 10th, 2026 AT 9:42 AM

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