Ignition coil D primary/secondary circuit
look on the trunk hinge there should be a sticker with the code on it
Trouble code P0354 means:Ignition coil D primary/secondary circuit malfunction
inside the car
Code p0430
Underneath the trunk lid
the door code number is on a sticker inside trunk lid
Look on the trunk lid support arm.
You won't know until you get the code read.
You will find it on the right hinge of the trunk
Check inside the trunk, on the lid arm.
You will find a sticker in the trunck with the factory code printed on it.
Mine was under the trunk lid. When you open the trunk you can see it up underneath towards the back. A white sticker with 5 black numbers on it. '94 Grand Marquis