Code po 410 on your olds aurora 3.5 v6 engine?

Answer 1

First check the 50 amp fuses in the underhood fuse block.another common thing that can cause that code is one or both of the air diverter valves(check valves)that are vaccumcontrolled by the bypass valve solenoid.these two valves get stuck and do not allow the air from the pump(smog pump)to enter the exhaust.the valves are slver,and have small tubes running into the exhaust manifolds.they have 1 vaccum hose on them. One is above the belt,near the firewall,the other is near the dr. Side of the front valve cover.use a vaccum pump to see if the valves hold vaccum after making sure the solenoid is supplying vaccum when the air pump(smog pump)turns on.another common thing that can cause that code is the air pump(smog pump). The air pump forces pressurized fresh air into the pipes/hoses and past the check valves into the exhaust manifold,accelerating catalyst operation.the spinning vanes of the air pump(smog pump)force air into the diverter valve.during accelaration air is forced through the diverter valve,the check valve,the air injection manifold,and into the exhaust stream.during deceleration the diverter valve blocks air flow,preventing a backfire that could damage the exhaust system.when needed,the diverter valve will release excess pressure to the air cleaner.the code p0410 is the secondary air injection system.the secondary air injection system reduces exhaust emissions following initial engine start up.the components of this system are the air pump(smog pump),the diverter valve,the air ditribution manifold; both known as exhaust manifold and exhaust headers,and the air check valve.the air injection system is designed to introduce clean air to the engine exhaust as it exits the exhaust manifold or exhaust headers.exhaust gases are at their hottest as they leave the combustion chambers. Introducing oxygen to the exhaust at this point allows continued burning of the fuel mixture as it travels down the exhaust system and ultimately out of the tailpipe.