P0304 obd ii trouble code if it varies beyond 2 percent the monitor will set a p0304 code and illuminate the check engine light if there is more than a 10 percent variance the check engine light will blink or pulse in a steady manner to indicate that a harmful catalytic converter misfire is occurring. Flashing check engine light dtcs p0300 p0301 p0304 multiple misfire in cylinder 1 and cylinder 4 when driving car idles up and down like not . P0304 cyl 4 engine misfire code and p0316 misfire in first 1000 revolutions on a 2002 ford taurus wiht the 30l dohc engine 120k miles note the engine runs rough primarily on the second or later drive of the day and when stopped and in idle the engine light flashing and rough engine lasts for about 30 to 60 seconds regardless if i stay at idle or try to accelerate. Check engine light code p0304 how does a p0304 code trigger the check engine light this code will trigger the check engine light as follows the misfire detection monitor a software strategy built into the computer is designed to detect an engine misfire the computer can also normally identify the specific cylinder in which the misfire . Http wwwwellsvecom when you have a flashing check engine light what does it mean we take you through the diagnostics of a vehicle with this issue kno
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