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What does it mean when the check engine light flashs in a 2002 Chevy Express van?
Wiki User
∙ 13y ago
If the check engine light is flashing as you are driving it means you are about to destroy the catalytic converter(s). Stop the engine and get it to a garage.
Wiki User
∙ 13y ago
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What does it mean when the check engine light flashs in a 2002 Chevy Express van and a obd2 give you a code po300?
Random cylinder misfires. Replace the spark plugs and spark plug wires.
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It takes a scanner to read the codes.
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It requires an engine scanner to do that.
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