My check engine light is on for a 2011 Honda Pilot and the diagnosis says P0420. What does it mean and how can be fixed?
My check engine light is on for a 2011 Honda
Pilot and the diagnosis says P0420. What
does it mean and how is it fixed?
Hornet_2497 answered 5 years ago
That code P0420 means there is something wrong with either the catalytic converter or the O2 sensor. Google that code for more information and a You Tube video fix.
Cold weather can trigger that code as might be a rich fuel mixture. Mine went away in a day on its own
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