Replaced air pump still getting the P0410 - Secondary Air Injection Malfunction error

Ickey · 07-30-2009, 07:30 PM

Error code P0410 - Secondary Air Injection System Malfunction

My check engine light has been on for some time. I knew that the P0410 code had to do w/ emissions so I wasn't overly concerned until now since SMOG is due in order to have my car registered.

I had the air pump replaced by a mechanic who said he was 100% sure this is why I was getting the error code. He cleared the code and my check engine light went away. 3 days later it was back, and we are getting the same error code.

I asked him if he replaced/checked the relay and checked all the valves/hoses, which he said he did. When I cold start my car, I believe I can hear the air pump going cause it only stays on for around 20seconds. But I can hear a hissing sound. Could that be a leak? The hissing sound comes from the front right side of the motor. Is this the area of where the air pump is?

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Ickey · 07-31-2009, 04:41 PM

bump! Anyone??

~CL500~ · 08-08-2009, 10:37 PM

Quote:

Originally Posted by Ickey

Error code P0410 - Secondary Air Injection System Malfunction

My check engine light has been on for some time. I knew that the P0410 code had to do w/ emissions so I wasn't overly concerned until now since SMOG is due in order to have my car registered.

I had the air pump replaced by a mechanic who said he was 100% sure this is why I was getting the error code. He cleared the code and my check engine light went away. 3 days later it was back, and we are getting the same error code.

I asked him if he replaced/checked the relay and checked all the valves/hoses, which he said he did. When I cold start my car, I believe I can hear the air pump going cause it only stays on for around 20seconds. But I can hear a hissing sound. Could that be a leak? The hissing sound comes from the front right side of the motor. Is this the area of where the air pump is?

Since you replaced the pump, you either still have a leak somewhere or the exhaust return valve may be stuck open (if one even exists on your car, not sure). My experience with these air pumps are on E36 BMWs, which are a pretty common repair for them BTW. The Benzes on the other hand have minimal issues with the air pumps. This is the first I've heard.

When replacing a secondary air pump, it's usually a good idea to replace the hoses too. A hairline crack can disrupt air flow, cause the CEL to light up and would be difficult to spot. I say replace the hoses, make sure everything is fastened correctly and ensure the exhaust return valve is closing correctly (again, if one exists). Good luck!

Crankin · 09-16-2009, 03:58 PM

Is n ot replacing a bad air pump likely to cause any bigger problems over time? Will it burn up the cats or anything like that?

Ausmbtech · 09-17-2009, 06:04 AM

Quote:

Originally Posted by Crankin

Is n ot replacing a bad air pump likely to cause any bigger problems over time? Will it burn up the cats or anything like that?

It's solely an emissions device so you can leave it if your local laws don't need a emissions check for rego. Only problem is that the engine light stays on, so you won't know if another fault arises

#1dad408 · 09-18-2009, 02:48 AM

A little trick For the smog check is to clear the cel. Drive it for 30-40 miles, At a rate of 55-65mph. Then check the readiness for the obdII parameters. Make sure theirs more green bars then red bars. If the cel is still off get it smogged right away before cel comes back on.

endri sallata · 10-25-2009, 06:15 AM

i have this problem whith my sl600.air pump is working fine but i stiil get the engine check on.p0410 fault code.what may be?

my06clk · 10-27-2009, 07:03 AM

Quote:

Originally Posted by Ickey

Error code P0410 - Secondary Air Injection System Malfunction

My check engine light has been on for some time. I knew that the P0410 code had to do w/ emissions so I wasn't overly concerned until now since SMOG is due in order to have my car registered.

I had the air pump replaced by a mechanic who said he was 100% sure this is why I was getting the error code. He cleared the code and my check engine light went away. 3 days later it was back, and we are getting the same error code.

I asked him if he replaced/checked the relay and checked all the valves/hoses, which he said he did. When I cold start my car, I believe I can hear the air pump going cause it only stays on for around 20seconds. But I can hear a hissing sound. Could that be a leak? The hissing sound comes from the front right side of the motor. Is this the area of where the air pump is?

The issue may not be a bad pump but the fact that it is running when it is not supposed to.

Many people ( even mechanics ) don;t realize that the secondary air pump is not supposed to be running hen the car is at operating temp. This will cause a running too lean fault most of the time also.
Check to make sure your thermostat is not stuck open or another circuit causing the pump to work all the time.

Its called secondary air pump for a reason.

DRTYLNDY · 10-27-2009, 07:52 AM

Maybe this will answer a few questions for you.

Service Campaign; Secondary air injection pump

Ickey · 11-02-2009, 02:10 PM

Turns out the air pump that was replaced by the mechanic was faulty. It stayed on constantly and actually melted a piece of the plastic away. They replaced for free (of course) and I also asked them to change the relay.

After a few days, no check engine light! Car was smogged w/ no issues at all.

my06clk · 11-03-2009, 09:57 AM

Quote:

Originally Posted by Ickey

Turns out the air pump that was replaced by the mechanic was faulty. It stayed on constantly and actually melted a piece of the plastic away. They replaced for free (of course) and I also asked them to change the relay.

After a few days, no check engine light! Car was smogged w/ no issues at all.

Told ya so...

99210 · 11-03-2009, 01:29 PM

the pump may be working properly but the air passages in the head to the cylinders may be clogged, causing o2 not to drop in voltage and me will set fault for air pump malfuction in fuction chain///may be able to clean passages some way but most of the time head has to come off//

dl0937 · 11-11-2009, 03:18 AM

I have the same problem. The air pump stay's on constantly.
Should I replace the relay? where is that relay located?
Thanks.

07-31-2009, 04:41 PM	#2
Ickey Member Join Date: Jan 2008 Location: San Diego Posts: 83 Drives: MB	bump! Anyone?? __________________ 2002 W220 S430 - Lowering Links, 20" Staggered XIX, '03 + Headlights, HID, LED Turn Sigs, Black Grill and Hood Grill 2008 GMC Denali - HID 6000K

09-18-2009, 02:48 AM	#6
#1dad408 Almost a Member! Join Date: Nov 2007 Location: San Jose Posts: 55 Drives: W220	A little trick For the smog check is to clear the cel. Drive it for 30-40 miles, At a rate of 55-65mph. Then check the readiness for the obdII parameters. Make sure theirs more green bars then red bars. If the cel is still off get it smogged right away before cel comes back on. __________________ Black on Black S500 Chrome wheels Spin'n Priceless

10-27-2009, 07:52 AM	#9
DRTYLNDY Member Join Date: Jan 2006 Posts: 155	Maybe this will answer a few questions for you. Service Campaign; Secondary air injection pump __________________ 2003 S55 AMG

11-02-2009, 02:10 PM	#10
Ickey Member Join Date: Jan 2008 Location: San Diego Posts: 83 Drives: MB	Turns out the air pump that was replaced by the mechanic was faulty. It stayed on constantly and actually melted a piece of the plastic away. They replaced for free (of course) and I also asked them to change the relay. After a few days, no check engine light! Car was smogged w/ no issues at all. __________________ 2002 W220 S430 - Lowering Links, 20" Staggered XIX, '03 + Headlights, HID, LED Turn Sigs, Black Grill and Hood Grill 2008 GMC Denali - HID 6000K

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09-16-2009, 03:58 PM	#4
Crankin Super Member Join Date: Dec 2002 Location: FL Posts: 508 Drives: 2000 S500 Brilliant Silver, 1990 BMW 735iL, 1971 Pontiac Trans Am 455 HO, 1976 Pontiac Formula 400	Is n ot replacing a bad air pump likely to cause any bigger problems over time? Will it burn up the cats or anything like that?

10-25-2009, 06:15 AM	#7
endri sallata Junior Member Join Date: Oct 2009 Posts: 23 Drives: sl600 2005	i have this problem whith my sl600.air pump is working fine but i stiil get the engine check on.p0410 fault code.what may be?

11-03-2009, 01:29 PM	#12
99210 Junior Member Join Date: Nov 2009 Posts: 30 Drives: 1999 e320	the pump may be working properly but the air passages in the head to the cylinders may be clogged, causing o2 not to drop in voltage and me will set fault for air pump malfuction in fuction chain///may be able to clean passages some way but most of the time head has to come off//

11-11-2009, 03:18 AM	#13
dl0937 Newbie Join Date: Nov 2009 Posts: 1 Drives: S430	I have the same problem. The air pump stay's on constantly. Should I replace the relay? where is that relay located? Thanks.

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