If the Check Engine light of your Ford is on and the scanner shows the P0402 code, it means the ECU has detected the following problem:
"Exhaust Gas Recirculation Flow Insufficient Detected"
Keep in mind that the severity and repairs for this code depend entirely on the specifications of your Ford, whether diesel, petrol, or hybrid.
Instead of changing parts blindly, use the CarWatch AI assistant. Scan your Ford's sensors in real-time and find out the root cause of the P0402 fault before going to the shop.
👉 Diagnose my Ford for FreeTo clear the engine light and read the P0402 code from your phone, you need an OBD2 adapter compatible with the Ford ECU.
🛒 View Compatible Scanner on Amazon