Secondary Air Injection (AIR) System ???
Thread Starter
Teching In
Joined: Dec 2001
Posts: 14
Likes: 0
From: Cumming, Ga
Secondary Air Injection (AIR) System ??? I'm throwing this code, is that the Air pump? I do not have it running into my headers. I'm going to completely take it out some time soon.
<small>[ August 31, 2002, 05:25 PM: Message edited by: GaWS6 ]</small>
<small>[ August 31, 2002, 05:25 PM: Message edited by: GaWS6 ]</small>
Staging Lane
Joined: Aug 2002
Posts: 53
Likes: 1
From: Florida
Re: 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.
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.
Re: Secondary Air Injection (AIR) System ??? I threw the same code a while back. I needed to get the whole air pump replaced. Lucky for me it is part of the emissions warranty, which is longer then the bumper to bumper. Got it replaced for free.
Thread Starter
Teching In
Joined: Dec 2001
Posts: 14
Likes: 0
From: Cumming, Ga
Re: Secondary Air Injection (AIR) System ??? Well the air pump lines are not hooked up, and I am actually going to remove it. Can I safely remove those codes (410 and 416)?
<small>[ September 01, 2002, 01:14 PM: Message edited by: GaWS6 ]</small>
<small>[ September 01, 2002, 01:14 PM: Message edited by: GaWS6 ]</small>
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TECH Fanatic
Joined: Nov 2001
Posts: 1,355
Likes: 1
From: Chicago (Elgin), IL
Re: Secondary Air Injection (AIR) System ??? I got this code on another vehicle.."Secondary Air Injection Failure.
After printing out the test sequence for P0410 on GM's SI 2000 system, the first line of testing is to look at your O2 sensors.
I had noticed that occasionally (not at this time when it threw P0410) that I was getting a slow heating B1S1 O2 sensor code.
After performing some O2 diagnostics, it turned out that slow heating B1S1 O2 was the culprit.
On Autotap, select all your O2 sensors. When you turn the ignition to ACC position (Do not crank the engine) the voltage on the O2's should either drop below .300mv or jump past .700mv's within seconds (almost instantly really).
That was my problem...after about 5 minutes, my B1S1 had only dropped to about .550mv...BINGO!!!
After printing out the test sequence for P0410 on GM's SI 2000 system, the first line of testing is to look at your O2 sensors.
I had noticed that occasionally (not at this time when it threw P0410) that I was getting a slow heating B1S1 O2 sensor code.
After performing some O2 diagnostics, it turned out that slow heating B1S1 O2 was the culprit.
On Autotap, select all your O2 sensors. When you turn the ignition to ACC position (Do not crank the engine) the voltage on the O2's should either drop below .300mv or jump past .700mv's within seconds (almost instantly really).
That was my problem...after about 5 minutes, my B1S1 had only dropped to about .550mv...BINGO!!!
