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Mercedes-Benz E420 Fuel Pressure Sensor Replacement at your home or office.

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Fuel Pressure Sensor Replacement Service

How much does a Fuel Pressure Sensor Replacement cost?

On average, the cost for a Mercedes-Benz E420 Fuel Pressure Sensor Replacement is $566 with $328 for parts and $237 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1994 Mercedes-Benz E420V8-4.2LService typeFuel Pressure Sensor ReplacementEstimate$944.12Shop/Dealer Price$1152.03 - $1677.33
1997 Mercedes-Benz E420V8-4.2LService typeFuel Pressure Sensor ReplacementEstimate$903.61Shop/Dealer Price$1113.36 - $1640.03
1995 Mercedes-Benz E420V8-4.2LService typeFuel Pressure Sensor ReplacementEstimate$894.12Shop/Dealer Price$1102.10 - $1627.45
Show example Mercedes-Benz E420 Fuel Pressure Sensor Replacement prices

What is the Fuel Pressure Sensor all about?

In fuel-injected and diesel engines, fuel rail pressure sensors monitor the pressure in the fuel rail and report the reading to the engine control module. If any drop in pressure is detected, the engine control module compensates so that the fuel pump can restore the proper pressure. A valve controls this pressure; if the sensor ever fails, you should replace it. Sometimes, the entire fuel rail may need to be replaced, but the sensor is a weak point in the loop that is more prone to damage.

If the sensor is working properly, only the amount of fuel that is needed to make the engine run properly will be delivered. Minimal excess fuel will be circulated back to the tank in the fuel return line.

Keep in mind:

  • Other problems such as a faulty crank position sensor, cam position sensor, air flow sensor, boost pressure sensor, and temperature sensor can mimic symptoms of a bad fuel rail sensor.
  • Starting problems may have myriad causes that are entirely unrelated to sensors.

How it's done:

  • The fuel pressure is bled and battery is disconnected
  • The defective fuel rail sensor is removed
  • The new fuel rail sensor is installed
  • The battery is reconnected
  • The repair is verified and the vehicle road tested for proper operation

Our recommendation:

The fuel rail sensor is not part of a maintenance check, and is only addressed when it fails. If you suspect a problem with your fuel rail sensor or fuel delivery system, have one of our expert mechanics inspect and replace the fuel rail sensor if necessary.

What common symptoms indicate you may need to replace the Fuel Pressure Sensor?

  • Car won’t start
  • Car runs erratically
  • Check Engine light comes on and stays on

How important is this service?

If your fuel rail sensor is faulty, you may experience difficulty starting the engine or poor performance that could cause trouble in traffic. Have a failed fuel rail sensor replaced as soon as possible.

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Number of Mercedes-Benz E420 services completed
264+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(24)
Rating Summary
18
2
1
0
3
18
2
1
0
3

Bill

21 years of experience
23 reviews
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Bill
21 years of experience
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by Scott
Mercedes-Benz E420 V8-4.2L - Air Filter - Aliso Viejo, California
Very professional, showed up promptly, and was honest in his diagnosis. Great service!

Bill

21 years of experience
23 reviews
Request Bill
Bill
21 years of experience
Request Bill
by Scott
Mercedes-Benz E420 V8-4.2L - Oil Change - Aliso Viejo, California
Knowledgeable, honest, and professional!

Brian

22 years of experience
132 reviews
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Brian
22 years of experience
Request Brian
by JP
Mercedes-Benz E420 V8-4.2L - Oil Change - Springfield, Virginia
It's the second time Brian has worked on my car (I should've left a comment the first time, but forgot). Each time he not only has been efficient, he's been a real professional. We also have a good time while he works. He's worked on my car at home and at my office and no matter where he works, I've been very satisfied. Owning an older model Mercedes Benz, I always worry that others won't treat it the way I feel it should be treated, but Brian does. He's knowledgeable and gentle with every part he handles and every screw or bolt he turns--I appreciate that. If my first two experiences are any indication of the future, my car is in good hands. Thanks Brian.

Matthew

21 years of experience
22 reviews
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Matthew
21 years of experience
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by Jeffrey
Mercedes-Benz E420 V8-4.2L - Car is not starting - Glen Burnie, Maryland
Very informative and thorough in attempt to determine the mechanical issue although none was detected. Highly recommended.

Excellent Rating

(24)
Rating Summary
18
2
1
0
3
18
2
1
0
3
Number of Mercedes-Benz E420 services completed
264+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

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