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?

Asked by GuruCX3LQ Feb 15, 2019 at 09:38 AM about the 2011 Honda Pilot EX-L 4WD

Question type: Maintenance & Repair

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?

2 Answers
42,870

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.

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Paul answered 5 years ago

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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