📩 Diagnosis and Solutions for Ford DTC P1304
🔧 Recommended Diagnostic Steps:
- Check possible causes listed above.
- Visually inspect the wiring harness and associated connectors.
- Inspect components: look for damage, broken/bent/corroded pins, or dislodged/damaged vacuum hoses.
- Test sensors/valves: vacuum actuator, EGR valve, EGR position sensor.
- Check correlations between sensors (e.g., MAP vs. barometric pressure – related code P0069).
⚠️ Common Causes of Ford P1304 Code:
• Damaged wiring/connectors, short circuits, or corrosion.
• Sensor/valve failure (e.g., EGR, MAP).
• Cracked or poorly secured vacuum hoses.
• Torn diaphragm in the vacuum actuator or EGR valve.
• Corrupted PCM software or calibration error after repair.
• Faulty PCM (rare – check as a last resort).
ℹ️ What Does Code P1304 Mean?
Generic description: “EGR Calibration High”.
⚠️ Note : The exact description may vary depending on your Ford model and year. Consult a specific manual or certified diagnostic tool.
📌 Key Points to Remember:
- Always start by inspecting wiring and connectors before replacing components.
- PCM reprogramming may be necessary if the software is corrupted.
- Code P0069 (MAP/barometric pressure correlation) may accompany P1304.
Good luck with your repairs!