Check primary and secondary ignition
Check fuel system-Fuel pressure and injector
Check for vacuum leaks
Check engine mechanical condition
Engine Light ON (or Service Engine Soon Warning Light)
The Engine Control Module (ECM) monitors for multiple cylinder misfires. The P1300 code means that there is a multiple cylinder misfire. There are many problems that can cause a multiple cylinder misfire. Start by inspecting the spark plugs and replaced the plugs if necessary.