Mercury specific DTC OBD2 code: P1409 EGR Vacuum Regulator Circuit malfunction
Mercury specific DTC OBD2 code: P1408 EGR Flow Out of Self-Test Range
Mercury specific DTC OBD2 code: P1407 EGR No Flow Detected
Mercury specific DTC OBD2 code: P1406 Differential Pressure Feedback Electronic Sensor Circuit Downstream Hose
Mercury specific DTC OBD2 code: P1405 Differential Pressure Feedback Electronic Sensor Circuit Upstream Hose
Mercury specific DTC OBD2 code: P1404 IAT – B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance
Mercury specific DTC OBD2 code: P1403 Differential Pressure Feedback Electronic Sensor Hoses Reversed
Mercury specific DTC OBD2 code: P1402 EGR Metering Orifice Restricted
Mercury specific DTC OBD2 code: P1401 Differential Pressure Feedback Electronic Sensor Circuit High Voltage
Mercury specific DTC OBD2 code: P1400 Differential Pressure Feedback Electronic Sensor Circuit Low Voltage