P0404 keeps returning even with new EGR

The vehicle lacks of power When I clear the p0404 fault code, the vehicle runs great for a couple of days or miles (costumer mentioned that

I'm getting an intermittent check engine light with a P0404 EGR performance code, but the vehicle is running fine

p0404 P0404 fault code This code refers to the EGR valve and its performance On the code reader it refers to 'A'control circuit Does anybody know

p0404 P0404 - EGR 'A' Control Circuit RangePerformance - OBD2 Trouble code: ✓ Meaning ✓ Causes ✓ Symptoms ✓ Diagnostics ✓ Repair guides ✓ Repair costs ➤ Keep