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Q: What does the code PO300 random misfire mean for a 1996 Buick Roadmaster?
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Most obdii codes are multi-digit, such as po300,po301,po302, etc. Etc. Po300's are usally misfire codes pertaining to the same cylinder...code po302 is a misfire in cylinder #2. A po300 code is a random misfire for any cylinder


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