Pontiac G6 P Codes (Powertrain) P0400 - P0499 P0420

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P0420 Code

2007 PONTIAC G6
Got The 0420 Code, O2 Sensors Checked Out Okay, Both On Obdii And With An Ohm Meter. Less Than 50 Degrees Temperature Difference Between...
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Asked by mondofox

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P0420P0430

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