Question about 2003 Cadillac Seville
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Posted on Jan 02, 2017
I have a 2001 STS that had the same problem - Service Engine light and returned the P0410 code. It ended up being a small rubber hose that had pulled off one of the plastic lines in the secondary air system. In fact, I just fixed this last night.
Pull off the top engine shield (the one covering the motor and the fuel injectors, not the plastic one at the front of the car) and look for loose lines, hoses or wiring.
Also - if you remove the shroud under the engine (you just have to pull out a bunch of plastic retaining plugs) you can get at the lower elements of the SAS. Look for loose lines, hoses or wiring.
You could be fortunate and just have a loose line. Does the caddie run OK?
Posted on Aug 02, 2010
SOURCE: procedure to repair P0410 code
code 410 is for the secondary A.I.R. system Check the fuse Some year models used vacuum to control the AIR valves others used electric valves The punp is located in front of the left front wheel. When the engine is cold (overnight soak) have someone start the car and you get down close to the front of the left front wheel aand you should hear the pump run
Posted on Aug 29, 2010
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