Auto Diagnostic Code P0420

P0420 code trouble gm 8l test catalyst efficiency bank threshold below codes encountered obd common ii most P0420 obd-ii trouble code: catalyst system efficiency below Diagnostic. codes p2463 p20c9 p0420

Code défaut P0420: Circuit de catalyseur, ligne 1 – rendement inférieur

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Trouble code solution p043e: decoding, causes, resetting, meaning

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Code défaut p0420: circuit de catalyseur, ligne 1 – rendement inférieurP0430 code: catalyst system efficiency below threshold (bank 2) Diagnostic code p0521P0023 code: exhaust “b” camshaft position actuator circuit (bank 2.

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What to do with a p0420 code

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