it could be your A/C condensation leaking back in, the drain line might be clogged
Trouble code P0420 means:Catalyst system efficiency below threshold
It's located behind the glovebox, on the passanger side of the dash
under the vehicle passanger side by rear tire attached to fuel tank
on the passanger side. it i located on the trans housing where the engine and trans meet.
Under the carpet in the floor of the trunk.
It is under the carpet in the trunk.
In the trunk, under the carpet.
It's located behind the glovebox, on the passanger side of the dash. How hard is it to get to the fan motor?
Under the carpet in the right rear of the trunk.
under the carpet in the trunk
follow the fuel line from the engine to the tank and it will be on the passanger side frame in-front of rear tire
It's on the top rear of the engine block, behind the intake manifold, on the "passanger side" of the distributor.