P0403 MAZDA Exhaust Gas Recirculation Valve Stepper Motor Circuit Malfunction

Possible causes – Faulty EGR volume control solenoid valve– EGR volume control solenoid valve harness is open or shorted– EGR volume control solenoid valve circuit poor electrical connection– EGR temperature sensor and circuit When is the code detected? An improper

Read More P0403 MAZDA Exhaust Gas Recirculation Valve Stepper Motor Circuit Malfunction