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I have a 2019 Aston Martin Vantage. I am getting a check engine light on and reading code 2404 and 2405. States "The Pump in the diagnostic module of the evaporative emission control system has a malfunction".
I checked to make sure its not being caused by the fuel tank opening. I taped it up to make sure it was not allowing air in. Check engine light still came back on. Any suggestions on what I should be replacing next?
I believe the evap system on your 2019 Vantage is the same (same components) as the system in my 2018 DB11 V12. I was receiving a P0456 which is a SMALL leak detected. Typically, it is the code that precedes P2404 which is a leak. And, A P-2405 points directly at the leak detection pump.
I went through the entire system on my car. The components consist of:
The capless filler neck
lines running to from the carbon canister and the purge valves
The carbon canister
the leak detection pump
finally the purge valves (located by the TBs)
I first thought the carbon canister must be saturated, so I concentrated on that. It is located in the driver's side rear wheel well right above the liner and the assembly contains the canister plus the leak detection pump.
With the assembly out it looks like this:
I wanted to replace both of these parts (even as a maintenance if they didn't eliminate the P0456). The canister is impossible to find/cross reference. Almost unique to AM. AM wants about $1200/$1400 depending where you want to buy it. More on the canister later.
The leak detection pump was easy. It is a common part used on other cars Audi, if I remember. The part is readily available using the Bosch #.
For the canister and BC I could not find a reasonable replacement, I did a surgery on mine. I will not go through all the gory details, but I literally cut the canister open and replaced all the carbon with new. There is a clean side and a dirty side in the canister. It is separated by spring loaded walls. The dirty side is about 2/3rds of the carbon, the clean side 1/3rd.
Once the canister was "refreshed" and the leak detection pump replaced, I put this all back together and still pulled a P0456. My next concentration was the purge valves located up front by the throttle bodies.
The purge valves themselves are common with a number of other cars, Audi, if I remember, was one. However, the Aston application includes the incoming and outgoing preformed tubes. At this point I didn't bother pricing out the AM parts. I bought the purge valves on Amazon, cut the old preformed tubes at the purge valves and spliced them into the new valves using fuel line.
The purge valves DID THE TRICK! No more P0456 in months now (not quite a year).
One last point - as I was researching all of this, it turns out this evap system is a common failure point in these gen cars and Aston developed a comprehensive TSB the tech is supposed to follow and essentially does the same thing I did - diagnosing and testing each component in the system to find the culprit. At the end of this diagnosis, most if not all of the parts I describe above get replaced even in the testing.
Finally and a repeat - I pretty sure these components are the same in a Vantage V8
08-09-2023, 07:36 AM
