what does it mean when the computer code scans all 6 cylinder misfire? on 2000 Jeep Grand Cherokee

the scanner scans that all 1- 6 cylinders have a misfire and the p0300 -p0306 codes start to flash. the check engine light flashes at the same time when accelerate , but there nothing wrong with the car

Asked by for the 2000 Jeep Grand Cherokee
1 answer 1 comment
Possible wrong spark plugs need OEM. Coil module breaking down. Fuel Injection problem.
It won't run right with the wrong type of spark plugs!! That i know.
well for me it runs perfectly but the computer scanner say it indicates that ?