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My code scanner kicked out a bad air pump code. i failed inspection check engine light was on. I replaced the air pump and the same code is still there. any ideas i called ford and they said there isn't a relay, fuse or anything. Any ideas im lost. Now i keep blowing the fuse for the cooling fan. not sure if there related or not. I love my Mark but everythings a pain to fix. Brian
Posted by: marcuseightus
Look at this thread maybe it will help? always use the search option.
Hey man sry i didnt get back to u sooner. My harley decided to blow the starter so i've been working on that. So the code is P0412, Sec air injection sys switching valve A circ error.
Posted by: Psychostang
Looks like you might have a bad switching solenoid. And don't call ford, because there are 2 fuses in the "AIR" system. Thermactor (30amp) fuse and an EAM monitor (10amp) fuse. Both are located in the Engine compartment fuse box. Thermactor supplies main power for the solid state relay box, and for the air switching solenoid. The pcm monitors both of these. It's prolly not noticing a changing in 02 sensor readings, after commanding the air pump on. It is also not noticing a wiring problem, so you just might have a bad air management solenoid. This solenoid ports engine vacuum to the air valves, allowing air from the pump to enter the exhaust system.
Posted by: bsmith96mark
Hey man thanks for the help. I'll check that out 2-morrow and get back to you. The bad inspection tickets are gettimg expensive.
Posted by: bsmith96mark
Oh by the way turns out the fan motor seized up thats y i was blowing the fuse. I put the new motor in last weekend.
