I had the same codes for my Dodge Durango 2003. I found that some breather hoses on the engine compartment and I replaced the PCV valve and the codes went away.

Can't possibly be the ECM.

 

Agree with everyone so far, sounds to me like a totally different issue. Likely wouldn't be an expensive or difficult thing to fix yourself, the hard part is finding the problem.

 

Forgot about this thread. Shortly after writing that, I replaced the LDP with one from a 2009 PT Cruiser that was in the junkyard. Same pump, just newer and probably less miles. I haven't had CEL since. These Chrysler products share a lot of parts across models. The LDP is shared across many vehicles.

 

Purge Solenoid Valves are the same way, except for mounting differences. Same part though.