P2097 Chrysler -what do all these codes mean and is this car worth fixing?

Question

I have a 2004 pt cruiser 5spd. Ran perfectly till yesterday when the check engine light started flashing and the car started shaking and putting. The codes read p2097pnd post catalyst fuel trim system bank 1 and p0172cnf bank 1system too rich and p0304cnf cylinder 4 misfire. Please help me understand what all this means.

Answer 1

P0172 Fuel trim rich Bank 1

P0304 Misfire number 4 cylinder

CK ENG LT flashing mean there is a misfire condition. which would be for the number 4 clinder,  You have 4 cylinder on the engine, in order to run smooth all 4 cylinder has to contribute, when a misfire occurs a cylinder or some cylinder are not contributing, Because you have one cylinder that is not contributing you running on just three cylinders. Is it worth fixing it depends on what the cause of the misfire is.

 Some of the main cause for the PT Cruiser to misfire would be with the ignition coil pack., If it is the ignition coil pack, it recomended to replace sparkplug, and sparkplug wire,

 Some are sparkplug wire, Here the valve cover leak oil internally of the valve cover , and oil saturated te sparkplug wire, causing a misfire. The misfire can be something very inexpensive such as a set of sparkplug, sparkplug wire and a valve cover gasket and maybe a igntion coil pack

 Expensive repair would be this, where it is a mechanical condition.