What to do when the P0300 misfire warning light flashes?

1 Answers
Lois
07/29/25 4:55pm
p0300 misfire warning light flashing correct solution is as follows: 1. Use a diagnostic tool to read the fault code and confirm that the MIL light is illuminated due to a misfire fault. 2. Read the freeze frame information to confirm the operating conditions when the fault occurred. 3. Clear the fault code, operate the vehicle under the conditions determined by the freeze frame, and analyze whether it is a real misfire or a misjudged misfire. 4. If it is determined to be a vehicle misfire, inspect the ignition system. 5. If there is no fault in the ignition system, analyze the air-fuel mixture control system. 6. When inspecting the wiring harness, ensure that the harness connections are good. 7. If the above steps still do not solve the problem, consider whether there are faults in fuel injection, ignition timing, mechanical load, etc.
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