P0420 Diagnostic Trouble Code Discussion for December 2021
Catalyst Efficiency Below Normal (Bank 1)
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Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Trouble Ticket Help Requests for DTC P0420
| Help Request | Posted | |
| 2011 Honda Accord EX-L 2.4L No Start VIN: 1HGCP2F83B P0420: . ... second or two. This has happened to the customer a few times but only now have we caught it in the act. We tested the spark when cranking and not starting, we have no spark or injector pulse at that time. The Green Key light on the dash lights up and a... |
December 31, 2021 |
