Welcome! I can help you with the codes you're seeing on your 2014 EcoDiesel.
- P22FA: DEF (Diesel Exhaust Fluid) tank heater issue. Check or replace the DEF heater, inspect wiring.
- P0420 (Bank 1): Catalytic converter efficiency issue. Likely causes are a failing catalytic converter, exhaust...
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Hey, a good scan tool that you can use should be this one. It works great I've had mine for years and it works better than any other scanner. https://dieselscanners.com/products/diesel-diagnostic-laptop-scanner-tuner-truck-repair