![SMP Europe on Twitter: "Vehicle displaying one of the OBD codes shown below? It could be a fault with the EGR Valve. Usually a costly repair, SMP Europe has launched a new SMP Europe on Twitter: "Vehicle displaying one of the OBD codes shown below? It could be a fault with the EGR Valve. Usually a costly repair, SMP Europe has launched a new](https://pbs.twimg.com/media/FmLuPvdWAAAD6TS.jpg)
SMP Europe on Twitter: "Vehicle displaying one of the OBD codes shown below? It could be a fault with the EGR Valve. Usually a costly repair, SMP Europe has launched a new
![P0401 Code: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected - In The Garage with CarParts.com P0401 Code: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected - In The Garage with CarParts.com](https://www.carparts.com/blog/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2020/08/closeup-of-egr-valve.jpeg.webp)
P0401 Code: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected - In The Garage with CarParts.com
![P0403 Code: Exhaust Gas Recirculation “A” Control Circuit Malfunction - In The Garage with CarParts.com P0403 Code: Exhaust Gas Recirculation “A” Control Circuit Malfunction - In The Garage with CarParts.com](https://www.carparts.com/blog/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2020/09/egr-valve-in-car-engine.jpeg.webp)