Does anyone know what will cause a P0410 check engine code to come on. I have a 98 with 50k.
Thanks
Steve

 

DTC P0410 Secondary Air Injection (AIR) System




Circuit Description
An AIR pump is used on this vehicle to lower tail pipe emissions on start-up. The PCM supplies a ground to the AIR pump relay, which energizes the AIR pump.

The PCM monitors the HO2S voltages to diagnose the AIR system.

During the AIR test the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.

If the PCM determines that the HO2S voltages for both banks did not respond as expected during the tests, DTC P0410 sets. If only one sensor responded, the PCM sets either a DTC P1415 or P1416 to indicate on which bank the AIR system is inoperative.

Conditions for Running the DTC
DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0300, P0325, P0327, P0335, P0441, P0502, P0503, and HO2S DTCs not set.
The engine operating.
The engine operates for greater than 20 seconds in short term fuel trim cell 20.
Engine speed is greater than 550 RPM.
Maximum air flow is 22 g/s.
ECT is greater than 60°C (140°F).
IAT is greater than 10°C (50°F).
Ignition voltage is greater than 11.6 volts.
Engine load is less than 34%.
Conditions for Setting the DTC
HO2S voltage does not go below 222 mV for 1.2 seconds.
Short term fuel trim does not go above a predetermined amount.
Action Taken When the DTC Sets
The PCM illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the PCM stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure Records.
Conditions for Clearing the MIL/DTC
The PCM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A last test failed, or current DTC, clears when the diagnostic runs and does not fail.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Use a scan tool in order to clear the MIL and the DTC.

 

Does that mean my air pump is not working properly?

 

Yes; you might want to check your ground for the air pump. I have the same problem.

 

Usually when the P0410 code sets it just causes an emission problem that doesn't affect running and won't even show up at an emission check. My truck has set it occasionally for more than 2 years. I just reset the code which usually lasts a long time and I've never bothered fixing it. You can reset it with the DIC and see how soon it comes back before deciding on repair. You can also just remove air pump system and have tuner tune it out.

 

I thought that I read that a vacuum leak behind the front fender could cause it. Has anyone had this happen to them?
Steve

 

Steve

The pump could be bad, the vacuum controled outlet valve could be bad or not receiving vacuum, the CHECK VALVES could be bad.

Easy way to see if the pump or stuff that operates the pump works is:

Look on the fender well,,Right next to the alternator and you will see a 3/4" rubber hose. There should be a plastic barbed connector that will allow you to break/seperate the hose connections between the pump and engine.

Disconnect that hose and when the engine is dead COLD,,start the car and immediately inspect the hose. The end that comes from the pump (Its located under the drivers headlight) should be blowing a good strong stream of cold air. If it is, everything that runs the pump is GOOD. The problem is most likley the check valves.

Bill

 

i have this code po410 the pump is working but the valve is shot off no air is coming out, may be this is relay issue? please help my smog is due
thanks

 

Hay guy's,, had the same problem. I removed the lines, and valves and filled them with break cleaner. Then I put air into them in both directions. When they are clean and working the air will blow out one side and not the other (check valve working) .. Do this to the hoses as well and get all the crud out.. Next spray them with wd-40 (don't fill them) and put it back together. Did mine couple years ago and they are still working great.. OR you can also have them tuned out, just plug them.
mike

 

On my car I got tired of deleting the code so I removed the air pump system which also cleans up the engine compartment. I then had the system tuned out of my computer by my previous tuner, don't want to get him in trouble, in New Jersey the only inspection they do anymore is for emissions. My car still passes our computerized state inspection.

 

The AIR system is only for cold start, unless they come to your house they can't really test it's effectiveness. I'd guess it's a visual only where required.

 

I've been getting this stupid code for over a year now. I finally had it tuned out when I was getting some work done last week. I never could find anything wrong with the system and as other people have mentioned, it's generally irrelevant.

 

I'm having the same problem, how do tune P0410 out and where do you plug the hose?

 

A tuner can turn it off unless you have tuning software

 

Bland!!

 

Thread resurrection.

My 2000 C5 is throwing this code, and I looked beside the wheel well and there isn't a vacuum line by the alternator.

Anywhere else it could be hiding?

 

The P0410 can be caused by a handful of things...bad fuse, AIR pump, AIR pump relay, solenoid valve, shut off valve, vacuum leak and all associated wiring...I'd start with the easy stuff first !!

 

I already have.

Fuse is good, power is good to that fuse.

Relay is good, swapping it with the fog light relay didn't change anything and fogs still work.

We're down to whether the pump works, the check valve is bad, or there is a leak.

There is a very LARGE air hose on the DRIVER'S side wheel well, but not the passenger side. Almost no air comes out of this when I pull the hose. I can feel the tiniest amount but not very much.

 

The pump usually operates for about 20-30 seconds when the engine is cold and first started...was the pump operating when you checked for this airflow ??...basically how this thing works is the the PCM opens the solenoid which now allows vacuum to flow to the shutoff valve at the pump and this vacuum opens the shut off valve and now the flow from the pump can flow into both exhaust manifolds where the fuel trims go lean and the fuel system is in closed loop...this is what the PCM is expecting to see and if not it throws that DTC !!...there are different DTC’s for one check valve or the other...slim chance both are bad !!

 

Thanks,

Yes, I checked it when the engine was cold.

I would prefer just to tune it out but I don't know any tuners in my area. I don't think it does jack squat for emissions other than something else that can break that they can charge you to fix but my local emissions in TN are catching it so I have to do something about it.

I'll re-post the codes in a minute, it is for sure throwing the 0410 code and possibly another one, I'll have to check it in the morning. I thought it was a typical small vacuum hose but it's not, it's the diameter of my thumb.