Check engine light came on and I checked codes 300,308,442,455,456. What should I do?

 

First, what what year and engine cofig?
P0300 Multiple Cylinder Misfire
P0308 Cylinder #8 Misfire
P0442 Evap Leak Monitor Medium Leak Detected
P0445 Evap Emission Sys Purge Ctrl Valve Circ Shorted
P0446 Evap Emissions Vent Valve Perf
If 4.7L, no distributor and wires.
If 5.2 or 5.9L Check wires and cap. For all sprkplugs, I would suggest the cheapie Champion copper ones. They're OEM so stick with them. Gap should be 0.40 inches.
For evap, check all hoses and vacuum lines. replace if cracked or brittle.
There's a purge solenoid valve located between the battery and fender wall inside the engine bay. Replace with one from AZ. Make sure the hoses and elbows are not cracked. That's a 10 minute job. HTH.
BTW, we have a code index on the forum, here's the link.
https://dodgeforum.com/forum/1st-gen...ine-light.html

 

yup almost exactly what i was gonna say (damn you dan )

 

thanks for the help

 

So what did I get wrong?

 

Or PCM has gone out.

 

PCM? Ouch!

 

That's a lot of codes in one sitting that's all?

 

ron, anytime. Hope things work out for you.

 

Could be a bad plug wire and an over filled gas tank.

Or a loose connection to the PCM.

Or a bad PCM as stated.

Or the list Dan provided (kudos, nice job)

Or who knows. Agreed that multiple codes usually don't happen at once, hence the PCM sniffer. Keep us updated.

IndyDurango