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 | P0401:00 | EGR A Flow Insufficient Detected: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P0402:00 | EGR A Flow Excessive Detected: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P0405:00 | EGR Sensor A Circuit Low: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P0406:00 | EGR Sensor A Circuit High: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P040B:00 | EGR Temperature Sensor A Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test WA |
| PCM | P040C:00 | EGR Temperature Sensor A Circuit Low: No Sub Type Information | GO to Pinpoint Test WA |
| PCM | P041B:00 | EGR Temperature Sensor B Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test WA |
| PCM | P041C:00 | EGR Temperature Sensor B Circuit Low: No Sub Type Information | GO to Pinpoint Test WA |
| PCM | P041D:00 | EGR Temperature Sensor B Circuit High: No Sub Type Information | GO to Pinpoint Test WA |
| PCM | P042E:00 | EGR A Control Stuck Open: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P0470:00 | Exhaust Pressure Sensor A Circuit: No Sub Type Information | GO to Pinpoint Test X |
| PCM | P0471:00 | Exhaust Pressure Sensor A Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test X |
| PCM | P0474:00 | Exhaust Pressure Sensor A Circuit Intermittent/Erratic: No Sub Type Information | GO to Pinpoint Test X |
| PCM | P0489:00 | Exhaust Gas Recirculation (EGR) A Control Circuit Low: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P0490:00 | Exhaust Gas Recirculation (EGR) A Control Circuit High: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P049D:00 | EGR A Control Position Exceeded Learning Limit: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P04D9:00 | Closed Loop EGR Control At Limit - Flow Too Low: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P04DA:00 | Closed Loop EGR Control At Limit - Flow Too High: No Sub Type Information | GO to Pinpoint Test W |
| PCM | P2425:00 | EGR Cooling Valve Control Circuit/Open: No Sub Type Information | GO to Pinpoint Test AZ |
| PCM | P2426:00 | EGR Cooling Valve Control Circuit Low: No Sub Type Information | GO to Pinpoint Test AZ |
| PCM | P2427:00 | EGR Cooling Valve Control Circuit High: No Sub Type Information | GO to Pinpoint Test AZ |
| PCM | P2457:00 | EGR Cooler A Efficiency Below Threshold: No Sub Type Information | GO to Pinpoint Test AZ |
| PCM | P245B:00 | EGR Cooler Bypass Control Circuit Range/Performance (Bank 1): No Sub Type Information | GO to Pinpoint Test AZ |
| PCM | U0691:00 | Lost Communication With Exhaust Pressure Sensor A: No Sub Type Information | GO to Pinpoint Test X |