Helpful Automotive Resources
P0403 Code: Exhaust Gas Recirculation “A” Control Circuit MalfunctionWhat happens when your vehicle’s powertrain control module (PCM) detects a fault in your EGR system? There are several OBD-II codes related to a faulty component in the EGR that may appear on your OBD scanner. One of them is the P0403 code.
The code P0403 activates when the PCM