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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
If you have the V12 5.2L Bi-turbo, then the purge valves (2, one before each throttle body) are Bosch 0280 142 442.
A CORRECTION TO MY POSTS ABOVE - The MB AMG 4.0L engine uses different purge valves than the V12, but the leak detection pump and the carbon canister are the same.
The Bosch 0280142442 doesn't appear to be available in the US (however, I see it available in EU/UK markets); instead, there is (was) an aftermarket (as in China) replacement for the correct Bosch unit in the US. I went to Amazon typed in the search Bosch 0280142442 and it came up. The China product name is Minoom. I have had two in my car now running as expected since roughly the original date of this thread.
UNFORTUNATELY, I just quick checked Amazon and the part now shows - UNAVAILABLE.
If, by your handle might suggest you are in the UK you should be able to find the Bosch 0280 142 442 for sale. Remember too, the Aston Martin replacement parts come with fixed lines, fore/aft the purge valves, so in my case, I cut these lines and fixed them with flexible fuel line hoses and clamps.
If you want pure AM replacements, then you will need to get replacements from an AM dealer.
Thank you so much! I just popped the hood and that part number from bosch is correct. My hose lines have clamps on each end, so I can replace the actual part itself. I am based in Florida, so will probably have to order and wait 2 weeks for delivery. What was the minoom link to amazon or part number? I may just order that and not wait 2 weeks. I already replaced the gasless cap unit with the issue not being resolved. The cannister is the same as yours but a replacement part is like $800+. I would rather try my luck and spend less than $80 before committing to changing the carbon cannister.
This is not the correct one. Essentially, all these purge valves do the same thing, just different electrical connects and unit positions. The one you chose will not have the correct electrical connection. connector won't fit (ask me how I know).
This site a little particular about links so I took a screen shot of the correct exact replacement for the Bosch 0280142442
Thanks for all your help! I ended up purchasing the original from Bosch as the one from Amazon also took the same amount of time for delivery. Will report back to see if this did the trick. If not, the charcoal canister is next for replacement.
Thanks for all your help! I ended up purchasing the original from Bosch as the one from Amazon also took the same amount of time for delivery. Will report back to see if this did the trick. If not, the charcoal canister is next for replacement.
Yes, please get back. Would like to hear how it comes out. I'm becoming obsessed with this evaporative emissions design AM used.
Funny, when I first researched this, the TSB techs use for an evap leak starts with...:replace the pump....if the p0456 (or p0442) comes back, then....replace the....etc., until the code stops reproducing.
The way this system works, every (x) startups, the leak pump turns on, pressurizes the system. The ECU measures the pump current resistance during the pressurization. If the resistance goes up, then no leaks as the system is holding pressure and the pump is working harder and harder. If the resistance stays the same, the EMS concludes there must be a leak somewhere. Based on the actual resistance measured, it will record either a small leak P0442 or a very small leak P0456.
Then the hunt begins...where is the leak? Could be:
purge valves
Any of the lines connecting the various evap components.
the CAPLESS fuel fill port or either or both of the line connections from the port.
OR
The leak pump could be bad!!!
The carbon canister itself won't leak, but connections to it might.
So the tech keeps replacing each of these parts until the test passes.
Probably one of the worst designs I've seen...especially the capless fuel fill....WHY?? this part is over $1K and a simple gas cap (which can also go bad) might be $15/$20.
Apologies for the late response. I ended up ordering the original part that manufactured from Bosch that was located in Latvia. Took about 2 weeks to be delivered to Florida.
I can't thank you enough! I tred removing the sensors but they were almost impossible, so ended up cutting them out as the original pipes had enough length for me to rehook the new ones. When I removed the sensors, I tried a simple test of blowing into them to see if the valves were open or closed. Both sensors were faulty as the valves were continiously open. The initial issue threw a CEL light after 200+ miles but the longer I kept turning the light off, the quicker it kept coming back on in miles driven. In fact, the CEL light kept coming back on after 10-15 miles.
Replacing both sensors did the trick. Outside of this, I did also replace the gas intake capless manifold that I bought used for $120 off ebay from another damaged aston. It has only done around 2,000 miles and the part was almost new. Aston Martin quoted $1250 exc taxes and delivery and labor.
Thanks for getting back. Always good to hear a positive end to any issue. Also nice to hear problems solved on such a beautiful car without the extraordinary pricey OEM parts...if they are even available these days.
