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Everytime when my wife comes home in her 2007 C230 from the gas station, we can smell gas odor in our garage. It had a full tank of gas.
I looked everywhere (under the car, under the hood, etc) and I could not find any gas leak.
Then she drives about 10 miles or so, and comes back home and parked her car in the garage. No gas odor.
I told my wife to stop putting too much gas in tank, she said that when the gas nozzle (gas pump) "clicks" (the FIRST click), she stops and pulls the nozzle from her car.
Why does her car gives out bad gas odor when the fuel tank is full?? Do you think the vapor system isn't working right or ???
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
If the EECS (Evaporative Emissions Control System) is not working properly or you a saturating the charcoal canister or the gas cap not sealing - you should receive a CEL - Do you have an OBDII scanner? - you should check for stored codes. P0456 & P0457 being the most common.
Look for codes in this range.
P0440 Evaporative Emission Control System Malfunction
P0441 Evaporative Emission Control System Incorrect Purge
Flow
P0442 Evaporative Emission Control System Leak Detected
(small leak)
P0443 Evaporative Emission Control System Purge Control
Valve Circuit Malfunction
P0444 Evaporative Emission Control System Purge Control
Valve Circuit Open
P0445 Evaporative Emission Control System Purge Control
Valve Circuit Shorted
P0446 Evaporative Emission Control System Vent Control
Circuit Malfunction
P0447 Evaporative Emission Control System Vent Control
Circuit Open
P0448 Evaporative Emission Control System Vent Control
Circuit Shorted
P0449 Evaporative Emission Control System Vent Valve/
Solenoid Circuit Malfunction
P0450 Evaporative Emission Control System Pressure Sensor
Malfunction
P0451 Evaporative Emission Control System Pressure Sensor
Range/Performance
P0452 Evaporative Emission Control System Pressure Sensor
Low Input
P0453 Evaporative Emission Control System Pressure Sensor
High Input
P0454 Evaporative Emission Control System Pressure Sensor
Intermittent
P0455 Evaporative Emission Control System Leak Detected
(gross leak)
P0456 Evaporative Emission Control System Leak Detected
(very small leak)
P0457 Evaporative Emission Control System Leak Detected
(fuel cap loose/off)
Finally took my wife's car in at Walter's Mercedes dealer (Riverside, CA) for a warranty repair on gasoline odor & leak. Tech found a leak underside (below the rear seat). He had to keep the car overnight - to test the gas pressure after he fixed the hose or something. The next morning, he didn't see any signs of gas leak.
I am GLAD that it's fixed, so we won't have any gasoline odor in the garage!!
Hi everyone-
I am new to this forum and I know this is an old post. I have a similar problem on an a 2014 ML350. I am getting code P0451 related to the Evap emission control system pressure sensor. Can someone tell me where this is located? I see that on some cars its located on top of the gas tank, any info will be greatly appreciated.
Thank You
06-21-2009, 08:24 PM
