P0410: Secondary Air Injection Malfunction

[CKlasse]

My check engine light went off this morning, and my scanner yielded :
P0410: Secondary Air Injection Malfunction

I checked all the air line from the supercharger to the header. No leaks whatsoever. No major mods/works done to the intake/supercharger within the last 3 months. Now the car seems to run on the rich side since the front O2S cannot read properly. Tomorrow I am going to take off the air line to see if it's plugged up (very unlikely).

Have anyone experienced this? Any hints that save me time is well appreciated! Thanks

CAR = 00 SLK 230K.

[jnenad16]

air pump?

nenad


ps any news on the magnecors?

[CKlasse]

On the kompressor engine, the air line goes from the supercharger to the manifold or headers. No mechanical or electric air pump that I could see. I dont have engine manual or EPC on this engine, so I can only tell you what I see.

Anyway, yes, Magnecor has been ordered. They should arrive to Denver anytime now. I ll email you my paypal account.

[714guy]

Ok i had the same CEL, only when i don't warm up the car and then gun, the CEL will come on with that DTC. Anyways my mechanic friend said that in my car it the carbon deposits in the heads that set off that code. He also said that it shouldn't affect performance. But your ar is pretty new or alot newer than my car so i don't think that might be it. I'll ask my friend and let you know

[benzaddict]

I assume you have a 2.3 compressor engine by your description and they have 2 common problems that will cause P0410:

1. The air injection system on these cars uses the supercharger as an air pump when it's cold to rapidly heat the catalytic convertors, that's why they have a clutch on the supercharger. There is an inlet valve/filter and the switchover valve. The inlet valve often gets plugged and minimizes flow which will give code P0410. The valve is attatched to the pipe that bolts to the cylinder head and has a 27mm head on it and unscrews from the pipe. Pull the valve out and try to blow through it, it's most likely clogged, even though it looks ok to the eye.

2. When the computer does a self check of the air injection system for code P0410 it activates the air pump/supercharger for about 40sec, which blows a rush of air into the exhaust which in turn drops the front O2 sensor voltage nearly to 0mv if all is working properly. That's how it checks the air injection system and if your O2 sensor is getting "lazy" and slow to react, or starting to lose it's ground, it will slowly drop in voltage and may not drop fast enough. The computer wants to see it below 40mv within 60 seconds and if not it triggers code P0410. When the system is working properly it will drop to 6-10mv immediately.

You mentioned that your O2 sensor is not operating well so I would replace that as it's already a problem and most likely related. Good luck.

[CKlasse]

I checked out the air hose to the header. No excessive backpressure. The O2S is still within range.

Can a pressure lost between the supercharger to the TB set off the code also?

[CKlasse]

PROBLEM SOLVED! (or at least the codes clear out for now)

NEW O2S Sensor and Air Mass.

[CKlasse]

Dang it..... the O2S was the problem. Now, I have an extra AIR MASS.

[albanianbenz]

I have that exact same problem on my 99 C230K. So for yours all u needed to replace was o2s

[CKlasse]

As far as what I have done to solved the issue....

1. Replaced the check valve along with the air tubes from the manifold to the downpipe.

2. Replaced the Air Mass Sensor.

The CEL went out after the two, but on the fuel map, the car is still running rich. So..

3. Replaced the O2 Sensor.

I noticed the VDO bypass valve is not functioning properly. So I am in the process of replacing it with a 50mm TIAL Waste Gate, and set it up at 11 psi.

I might put the pulley back on simply for this reason. :)

Hopefully by mid summer, I get to re-dyno and post it online.

[JRE320]

Originally posted by CKlasse
PROBLEM SOLVED! (or at least the codes clear out for now)

NEW O2S Sensor and Air Mass.

Where's the O2 sensor located? :confused:

[CKlasse]

The bank 1 upstream... which is right behind your manifold, before the cat.

[Proven Guilty]

my car is currently throwing P0410 and P1236. it feels as if there is a 40% loss in power. the supercharger spins up but its as if it is not engaging at all. funny thing is.. when i leave for lunch at work, all the power is back until the car gets anywhere near operating temperature. i'd say after the 2nd red light, it dies out again.

the shop i took it to is pretty reputable, and they suggested it may have been a relay that deals with the supercharger (the were able to confirm that the S.C. clutch was not working due to this possible problem).

after reading some other threads, it also sounded like it may be a voltage regulator, but now it sounds like o2 sensor(s). This only started once I had gotten back to California. The drive from Michigan, it did smell like the car was running a bit rich.

what do you guys think?
-O2 Sensors
-Bad Relay that is not engaging the S.C. clutch
-Voltage Regulator

what has been replaced already to help weed out possible problems:
-Replaced MAF about 3,000 miles ago
-New Iridium plugs
-New Fuel Filter

[Proven Guilty]

forgot to mention, 1999 c230 Kompressor

[MBATF]

Have not been on here for a long time...

Anywho, my DD 99-c280' check engin light came on while i was driving today. and 2 codes that I pulled after i got to work are. P0304(cyl4 misfire) and P0410(2ndary air) so what the hell could it be? or pretty much same as c-230k?:mad: