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The codes P0300 through P0306 indicates a misfire on cylinders 1 through 6. Here is a list of possible causes for you.
P0301 KIA - Cylinder 1 Misfire Detected Read more: https://www.autocodes.com/p0301_kia.html
The code P0320 indicates an issue with the ignition/distributor engine speed sensor. Here is a list of possible causes.
P0320 KIA - Ignition/Distributor Engine Speed Input Circuit Read more: https://www.autocodes.com/p0320_kia.html
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