P0456 on MERCEDES-BENZ E-CLASS
What P0456 Means on Your MERCEDES-BENZ E-CLASS
Real MERCEDES-BENZ E-CLASS Owner Reports (Source: NHTSA Complaints Database)
"Check engine light illuminated, code scan revealed code p0456. inspection reveals fuel leakage at both the left fuel sender and the right fuel pump housings. liquid fuel is externally evident along with the associated smell of raw fuel vapor."
"Check engine light comes on shortly after fill up of gasoline. light goes out when tank is about 1/2. repeats at next fill up. check engine code is p0456: evap system very small leak."
"There was a very strong fuel smell that began 8 months ago every time i parked the car in the garage. it was almost like someone spilled some gasoline on the floor. a month ago the check engine light came on and indicated a p0456 error code on the obdii reader."
"Bought a used 2007 mercedes benz e350 mar 14, 2011 drove less than 80 miles before check engine light came on because of code p0456."
Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.
Common Causes of P0456 on MERCEDES-BENZ E-CLASS
Percentages based on NHTSA complaint component analysis for this vehicle.
Complaint Trend by Year
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50-$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2-3 quotes. Dealer vs independent shop prices often differ 30-50% for the same repair.