P0300

WarningSensors

What This Code Means

No activity detected from the O2 sensor circuit.; Engine misfiring; Rough idle

Possible Causes

•Faulty O2 sensor
•Faulty spark plug
•Vacuum leak

Suggested Actions

1Test the O2 sensor.
2Replace the O2 sensor if faulty.
3Replace spark plugs
4Inspect and repair vacuum lines

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