Ford vehicles also use a set of diagnostic trouble codes (DTCs) to indicate potential issues with different systems in the car.
As of my last update in September 2021, Ford vehicles also use a set of diagnostic trouble codes (DTCs) to indicate potential issues with different systems in the car. As with other manufacturers, the specific codes can vary based on the Ford model, year, and the type of diagnostic system used. Here are some common Ford diagnostic trouble codes: 1. P0171 - System Too Lean (Bank 1) 2. P0174 - System Too Lean (Bank 2) 3. P0300 - Random/Multiple Cylinder Misfire Detected 4. P0301 - Cylinder 1 Misfire Detected 5. P0302 - Cylinder 2 Misfire Detected 6. P0303 - Cylinder 3 Misfire Detected 7. P0304 - Cylinder 4 Misfire Detected 8. P0401 - Exhaust Gas Recirculation (EGR) Flow Insufficient Detected 9. P0420 - Catalyst System Efficiency Below Threshold (Bank 1) 10. P0430 - Catalyst System Efficiency Below Threshold (Bank 2) 11. P0442 - Evaporative Emission System Leak Detected (Small Leak) 12. P0455 - Evaporative Emission System Leak Detected (Gross Leak) 13. P0500 - Vehicle Speed Sensor Malfunc