Diagnostic Trouble Code (DTC) Chart
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Diagnostic Trouble Code Chart
| Module | DTC | Description | Action |
|---|---|---|---|
| PCM | P0420:00 | Catalyst System Efficiency Below Threshold (Bank 1): No Sub Type Information | GO to Pinpoint Test HF |
| PCM | P0430:00 | Catalyst System Efficiency Below Threshold (Bank 2): No Sub Type Information | GO to Pinpoint Test HF |