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Fuel Tank Pressor Sensor Location?

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Old 04-27-2019, 12:26 AM
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2001 S55 AMG
Fuel Tank Pressor Sensor Location?
Hi Team! Engine light with P0451 error came up so I have purchased the OEM P/N 1635422818 Fuel Tank Pressor Sensor for my 2015 S550 … problem is, I can’t find it to replace it! Searched the forum and it is not located inside the right rear wheel well nor is it under the passenger rear seat access plate! I have seen the configuration for the fuel tank but there is no access to the right rear drivers’ seat to touch the fuel tank … do I have to drop the whole fuel tank? Anybody’s expertise and or P0451 error fix is greatly appreciated! VIN: WDDUG8FB5FA119482. Cheers!
Last edited by NelsonJrs; 04-27-2019 at 12:33 AM.
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Old 04-27-2019, 10:51 AM
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I assume you erased code and it returned if not, try this before replacing.


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Old 04-28-2019, 12:06 AM
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Thanks Bud! The engine light still remains on but I didn't know the fuel pressure sensor was located at this location. Do you know if it accessible from the rear seat or does the tank have to be dropped? I will try to check in the next few dayz!
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Old 05-05-2019, 02:32 PM
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Happy Sunday! I was unable to access this location from under the rear seat. Does anyone know IF I have to remove the muffler system and gas tank just to access this location? I really need advice ... otherwise Wifey wants it to go to the stealership and I do not trust their in and out work most of the times! If anyone has any advice ... it would be greatly appreciated! Cheers! Nelson
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Old 12-30-2020, 03:31 PM
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Hi. I recently ran into the same issue. What did you end up doing? Thanks.
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Old 12-30-2020, 04:13 PM
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Diagnose with MB diagnostics - quick test, erase code(s) before replacing parts.
Last edited by konigstiger; 12-30-2020 at 04:17 PM.
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