Volkswagen Passat P Codes (Powertrain) P0400 - P0499 P0421

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2004 Volkswagen Passat PO421 Bank 1

2004 VOLKSWAGEN PASSAT
Hello, Check Engine Light Has Been Coming On And Turning Itself Off For The Last Few Months. It Is Steady, Not Blinking. I Was Told If...
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Asked by RSM

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