P0420 code

Asked by Apr 02, 2015 at 08:39 PM about the 2004 Volvo C70 LPT Turbo Convertible

Question type: Maintenance & Repair

1 Answer

65,935

That's the code for the catalytic converter not working correctly. Before we condemn the converter have the downstream oxygen sensor and it's wiring checked. A faulty sensor or a bad connection can sometimes cause this trouble code as well. Clear the computer and see if the code resets. HTH. -Jim

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