2016 Ford F-350 Super Duty XL 6.2L MIL Lamp on
This Ford came in with catalyst efficiency codes for both banks. I replaced converters with Ford y-pipe and cleared codes. It came back a few days later with same codes. No other codes. Any ideas what could cause this. Usually new converters takes care of ...
FIX posted 4/6/2023
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Vehicle Data2016 Ford F-350 Super Duty XL
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2016 Ford F-350 Super Duty XL
VIN | 1FT8W3B69G |
Engine | 6.2 L / 8 cyl / FLEX |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |