PO410
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From: Seattle
2008 Mercedes Benz E63
PO410
My 03 55 is throwing a secondary air pump code. I put power to the pump and the pump works. I also put a new relay in the car and have the same issue. Any one else have an ideas?
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From: Seattle
2008 Mercedes Benz E63
Thanks.............I have one and cleared it after everything I have done. It keeps coming back. I can not hear the pump run in the morning when I start the car, but it DOES run when you directly apply 12 volts to the pump.
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From: Seattle
2008 Mercedes Benz E63
I know this....
I really need some advanced help here. I do not mean to sound like an ***, but I have put power directly to the pump and it works. The blue one way check valve works as it should. The air switching valve maybe to blame.
I really need some advanced help here. I do not mean to sound like an ***, but I have put power directly to the pump and it works. The blue one way check valve works as it should. The air switching valve maybe to blame.
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Cl65 AMG
I would also check any vacuum lines that are in play. When the car is cold is when it will run. I would listen for the pump to turn on cold, if it comes on the air is likely being directed incorrectly. Sorry I don't have a diagram to study so what else is in play I just can't talk about.
If someone has one post it and then I can better trouble shoot it.
If someone has one post it and then I can better trouble shoot it.
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From: Seattle
2008 Mercedes Benz E63
I could trouble shoot it if I had a schematic on the wiring. I beleive it is the air switching valve on the top of the valve cover on the passenger side. It does not run when it is cold. Only runs if power is put directly to it. Maybe a relay issue....
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Cl65 AMG
Heres a tip,
The pump is designed to add oxygen to the exhaust manifold where all the oxygen has been removed by combustion. Adding this Oxygen helps burn off UN-burned fuel leaving the engine. That happens when the engine is COLD when the
EFI is in a fixed map. It doesn't happen when the engine is warm because the extra oxygen would be detected via the O2 sensors and skew to hell the air fuel ratio.
Yes its electric and needs power to operate.
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Heres a tip,
The pump is designed to add oxygen to the exhaust manifold where all the oxygen has been removed by combustion. Adding this Oxygen helps burn off UN-burned fuel leaving the engine. That happens when the engine is COLD when the
EFI is in a fixed map. It doesn't happen when the engine is warm because the extra oxygen would be detected via the O2 sensors and skew to hell the air fuel ratio.
Yes its electric and needs power to operate.
The pump is designed to add oxygen to the exhaust manifold where all the oxygen has been removed by combustion. Adding this Oxygen helps burn off UN-burned fuel leaving the engine. That happens when the engine is COLD when the
EFI is in a fixed map. It doesn't happen when the engine is warm because the extra oxygen would be detected via the O2 sensors and skew to hell the air fuel ratio.
Yes its electric and needs power to operate.
Thread Starter
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Joined: Apr 2012
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From: Seattle
2008 Mercedes Benz E63
"I beleive it is the air switching valve on the top of the valve cover on the passenger side." This is something I should have mentioned as a side note and worded differently because if the pump is not getting power via relay this statement does not make sense. It was more brainstorming then anything else.
Driveability you are killing me. I tune AEM EMS and Ecm Link cars for a living. I know how the system works. I know it should work when the car is cold and IT DOES NOT RUN AT ALL. EVER. I have stuck my head down under the car when it is cold and started it. I have never heard anything. When I pull the cover and put power directly to the pump it will run. This is why I'm saying there is an issue else where.
This is making me assume there is a possible relay problem. From my understanding there is a common problem with these cars coming from faulty relays that keep power running to the pump constantly. Thus burning up the pump from running constantly. You then replace the relay and the pump and you get rid of the PO410 code. I have replaced the relay that common fails to no avail.
I have not heard of anyone having the problem I have where the pump runs when power is applied directly, but a possible relay failure is causing power to not be sent to the pump when it is cold.
Someone mentioned that turning the pump on via diagnostic tool. This sounds like the best option. What I was looking for was someone who has had this same problem, but it seems very few people work on their own cars on this forum. The E55 section has some good information though.
Driveability you are killing me. I tune AEM EMS and Ecm Link cars for a living. I know how the system works. I know it should work when the car is cold and IT DOES NOT RUN AT ALL. EVER. I have stuck my head down under the car when it is cold and started it. I have never heard anything. When I pull the cover and put power directly to the pump it will run. This is why I'm saying there is an issue else where.
This is making me assume there is a possible relay problem. From my understanding there is a common problem with these cars coming from faulty relays that keep power running to the pump constantly. Thus burning up the pump from running constantly. You then replace the relay and the pump and you get rid of the PO410 code. I have replaced the relay that common fails to no avail.
I have not heard of anyone having the problem I have where the pump runs when power is applied directly, but a possible relay failure is causing power to not be sent to the pump when it is cold.
Someone mentioned that turning the pump on via diagnostic tool. This sounds like the best option. What I was looking for was someone who has had this same problem, but it seems very few people work on their own cars on this forum. The E55 section has some good information though.
Last edited by layzie12g; Jun 4, 2012 at 02:25 PM.
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if you are not getting power to the pump you can back trace the wires (tedious, but best option) and see where they terminate. most likely you will have a common ground and the plus 12v going to a relay (or the other way around- dont know how it is on the w215). this might or might not be the relay you have replaced.
you either lost the +12v, or the ground to the pump.
the ground (to pump) is most likely "dynamic" - in other words there is no ground when the car is off, but once you turn it on ground should show up. using an ohmmeter see if you have the ground showing on the pump plug (ground prong). then see if you get the +12v using non-connector-originating ground (chassis ground). this should tell you what you lost- ground or +12v.
also, run through all your fuses with an ohmmeter. you never know. the relay you replaced is protected by a fuse.
you either lost the +12v, or the ground to the pump.
the ground (to pump) is most likely "dynamic" - in other words there is no ground when the car is off, but once you turn it on ground should show up. using an ohmmeter see if you have the ground showing on the pump plug (ground prong). then see if you get the +12v using non-connector-originating ground (chassis ground). this should tell you what you lost- ground or +12v.
also, run through all your fuses with an ohmmeter. you never know. the relay you replaced is protected by a fuse.
Last edited by alx; Jun 4, 2012 at 04:43 PM.
Thread Starter
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From: Seattle
2008 Mercedes Benz E63
The fuse for the relay I replaced check out good. As did all of the other fuses. This car is my dd so progress is some what slow since I work on customers cars in most of my free time. This is good information and what I will use as my starting point.
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Cl65 AMG
"I beleive it is the air switching valve on the top of the valve cover on the passenger side." This is something I should have mentioned as a side note and worded differently because if the pump is not getting power via relay this statement does not make sense. It was more brainstorming then anything else.
Driveability you are killing me. I tune AEM EMS and Ecm Link cars for a living. I know how the system works. I know it should work when the car is cold and IT DOES NOT RUN AT ALL. EVER. I have stuck my head down under the car when it is cold and started it. I have never heard anything. When I pull the cover and put power directly to the pump it will run. This is why I'm saying there is an issue else where.
This is making me assume there is a possible relay problem. From my understanding there is a common problem with these cars coming from faulty relays that keep power running to the pump constantly. Thus burning up the pump from running constantly. You then replace the relay and the pump and you get rid of the PO410 code. I have replaced the relay that common fails to no avail.
I have not heard of anyone having the problem I have where the pump runs when power is applied directly, but a possible relay failure is causing power to not be sent to the pump when it is cold.
Someone mentioned that turning the pump on via diagnostic tool. This sounds like the best option. What I was looking for was someone who has had this same problem, but it seems very few people work on their own cars on this forum. The E55 section has some good information though.
Driveability you are killing me. I tune AEM EMS and Ecm Link cars for a living. I know how the system works. I know it should work when the car is cold and IT DOES NOT RUN AT ALL. EVER. I have stuck my head down under the car when it is cold and started it. I have never heard anything. When I pull the cover and put power directly to the pump it will run. This is why I'm saying there is an issue else where.
This is making me assume there is a possible relay problem. From my understanding there is a common problem with these cars coming from faulty relays that keep power running to the pump constantly. Thus burning up the pump from running constantly. You then replace the relay and the pump and you get rid of the PO410 code. I have replaced the relay that common fails to no avail.
I have not heard of anyone having the problem I have where the pump runs when power is applied directly, but a possible relay failure is causing power to not be sent to the pump when it is cold.
Someone mentioned that turning the pump on via diagnostic tool. This sounds like the best option. What I was looking for was someone who has had this same problem, but it seems very few people work on their own cars on this forum. The E55 section has some good information though.
I don't see where we disagree. It was the way the post was written. I read the pump doesn't run cold to be it shouldn't run cold. LOL
Thread Starter
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From: Seattle
2008 Mercedes Benz E63
Someone used the wrong fuse in the spot of the air pump relay. It had 3 prongs and it needed a 4 prong relay. Good thing they didn't burn something up doing that... I went to the dealer and ordered the right one and fixed the problem.
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mercedes cl65 amg w215
2006 cl65 p0410 code
I am new to the forum, so any help or ideas are greatly appreciated. I have checked to see if the pump comes on in the a.m. and it does so I know that is working. I have tried to "sea foam" the car but no luck. any ideas?
thanks in advance!
thanks in advance!
