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Join Date: Jun 2009
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P0300 code "Random multiple cylinder misfire detected" - most likely cause?
2002 Corolla with 79k miles. Check engine light came on today. Car runs great otherwise. Took it to Advance Auto Parts and thier OBD II code scanner displayed: P0300 - "Random multiple cylinder misfire detected".
I know it's impossible to say exactly what this might be, but does anyone know if there is a "most likely" cause for this code?
The parts store said if could be either an ignition coil / pack, or, spark plug wires, or plugs (in other words, something ignition related). They're leaning torwards the problem being the ignition coil / pack, but admit they don't know for sure.