OBD-II Trouble Code: P0403 Exhaust Gas Recirculation (EGR) Circuit Malfunction
What does the P0403 OBD-II code mean? The P0403 code is an indication that the engine exhaust gas recirculation circuit (EGR) has malfunctioned. The engine control module (ECM) detects either a short or open circuit in the EGR vacuum control…