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1994 Nissan Pathfinder error code 21. What does this code mean and how do I fix it?

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1994 Nissan Pathfinder error code 21. What does this code mean and how do I fix it?

Vehicle: 1994 Nissan Pathfinder 6 cylinder

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21 is related to the ignition signal (you may have to check the ignition coils)

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