Hello, I'm Chris.I will do my best to answer your question fast and accurate using the info you have provided. Thanks for visiting Just Answer.
You need to get a scan tool on it which can monitor the PCMs ground signals to the coil to see if any are dropping out which would mean the PCM has driver faults. You also need to monitor the cam and crank sensors since they tell the PCM when to fire the fuel injectors and the spark plugs. I would really be checking the cam sensor and synchronizer since there a common failure at this mileage with these codes.