Hi there, My MDX also got the same code P0420. The check engine light has gone now but OBD code reader still shows that (probably from history).
honda ridgeline engine code p0420 Direct Download speed 7287 Kb/s
honda ridgeline engine code p0420 Full Version speed 5567 Kb/s
I’m just as curious as you are but, I’ll have to wait to see what he’s got P
Re: P0420 Catalyst system efficiency below threshold (bank1) o2 or cat? (Integra_Boi)
In Dec my 03 CRV got P0845 and P0420 code for the first time. Its the first time I seen an engine light on. I had 153K miles in it. Took it to the dealership and they …
2016 Honda Pilot vs Toyota Highlander – 2 great choices, only one winner – Duration: 12:51. nice cars and nice houses on Seattle’s Eastside 168,634 views