P0420 Diagnostic Trouble Code Discussion for December 2019
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2015 Ford F-550 Super Duty XL 6.8L Surge, MIL Lamp on VIN: 1FD0X5GY6F P0420: Catalyst system efficiencey below threshold bank 1. Thanks again for the help all! if you read the repair history you'll get a sense of this following scenario. Customer has this f550 and another just like it for their business in which these trucks do idle quite a bit. Well this customer brought this truck... |
December 08, 2019 |
