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Old 08-22-2014, 06:40 PM   #1
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P1410 code, engine light

So I had a "check engine" light when I got this Boxster, was out for about three days after I changed the battery, and came back on. Plugged in our Solis and pulled this code. So anybody have this A.I.R. issue, or do I ned to tear it apart to resolve it?

I admit, I'm being lazy, but any tips would be appreciated before I dig deeper. :-)

Hans
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Old 08-22-2014, 08:31 PM   #2
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This is an excellent place to start: https://sites.google.com/site/mikefocke2/checkenginelightcausedbymassairflowsensor

When I had those codes, the fault was this: http://986forum.com/forums/general-discussions/41855-p0410-p1411-solved.html

Unfortunately, there is a myriad number of parts that can result in this code and you'll have to work through the secondary air injection system to find the fault.
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Last edited by thstone; 08-22-2014 at 08:38 PM.
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Old 08-23-2014, 03:30 AM   #3
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Troubleshooting the secondary air sys. on my '98 was pretty straight forward. I could hear the air pump running at start up so that seemed good. I pulled the vacuum connection loose from the intake manifold and attached a hand held vac pump. Pulled 15" vacuum and let the thing sit for 20 minutes with no drop in vacuum, indicating the lines and tank all the way to the vacuum solenoid valve were good. Next I hooked up the Durametric and activated the system (if you don't have a Durametric or other diagnostic tool you can just apply 12VDC to the injection solenoid valve to see if it works.) Vacuum immediately fell to zero. Diagnosis=the diaphragm in the air injection vacuum valve has failed. If that valve was good and the vacuum solenoid valve was good the vacuum should have dropped slightly once the system was activated. If the vacuum solenoid valve was bad or not getting voltage then there wouldn't have been any drop in vacuum when the valve was activated. If the system holds vacuum, both valves are good, and the air injection pump is running then most likely the passages in the cylinder heads are clogged with carbon. This means dropping the exhaust manifolds and cleaning the passages out.

Hope this helps.
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Old 08-23-2014, 07:34 AM   #4
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Quote:
Originally Posted by ammonman View Post
Troubleshooting the secondary air sys. on my '98 was pretty straight forward.......
Nice job & great write up. About ten levels over my level of DIY abilities though.
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