c63 cel code p2540 low pressure fuel sytem

Feb 6, 2013 | 05:30 PM

rockdizzle

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2009 c63amg

c63 cel code p2540 low pressure fuel sytem

Just went and got car scanned said p2540 low pressure fuel sytem sensor/ circuit range/ performance. They thought was gas cap and it is not havent got car filled. Car sat for 2 months came on first time i drove it. Please help

Feb 6, 2013 | 08:15 PM

Merc63

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C63 AMG

Check your fuel pressure.

I have fuel pumps if you need. They are under rear seat.

Feb 7, 2013 | 02:51 AM

NS_C63

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From: South Africa

2008 C63 AMG

https://mbworld.org/forums/c63-amg-w...anges-c63.html

Dealership changed my fuel pump last year and error gone. No issues since then. Dont waste your time on sensors / regulators, etc. It is the fuel pump.

Feb 7, 2013 | 10:20 AM

rockdizzle

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2009 c63amg

Thanks for the info im going to take it to the dealer next week, can i still drive the car there?

Feb 7, 2013 | 01:36 PM

NS_C63

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From: South Africa

2008 C63 AMG

Quote:

Originally Posted by rockdizzle

Thanks for the info im going to take it to the dealer next week, can i still drive the car there?

Yes you can, fuel pump goes into "safe mode" and pumps constant higher fuel pressure. I drove and raced my car for over a year before getting the pump changed. Worst case is your car runs too rich.

Feb 7, 2013 | 01:42 PM

C-63AMG

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From: Dubai

C63 AMG

Guy's what a CEL code?

Feb 7, 2013 | 01:46 PM

SaphGreyC63

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2012 C63 AMG Sedan

Check Engine Light code

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Apr 17, 2013 | 11:24 PM

jvanbrecht

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2017 Mini Cooper S Clubman ALL4 - British Racing Green

I just got this code again, for the second time (they replaced the pumps previously).. uggg time to go back to the dealer.

Nov 24, 2015 | 09:09 PM

#10

naderkourani

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Joined: May 2015

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2009 E63 amg

2009 E63 P2540

Quote:

Originally Posted by NS_C63

Yes you can, fuel pump goes into "safe mode" and pumps constant higher fuel pressure. I drove and raced my car for over a year before getting the pump changed. Worst case is your car runs too rich.

Hi
I have a 2009 E63 with a fault code P2540 that comes and goes , the car has 2 fuel pumps under the seat, how do I know which one needs to be changed, or which one to order online , websites says primary fuel pump and secondary fuel pump.
also does this affects the 0 to 60 performance, because the best that could get was 5.2 sec

Thanks a lot for your help.