Buick specific DTC OBD2 code: P1409 EGR Vacuum System Leak
Buick specific DTC OBD2 code: P1408 Intake Manifold Pressure Sensor Circuit
Buick specific DTC OBD2 code: P1407 EGR Air Intrusion In Exhaust Supply To EGR Valve
Buick specific DTC OBD2 code: P1406 EGR Valve Pintle Position Circuit
Buick specific DTC OBD2 code: P1405 Exhaust Gas Recirculation System Valve 3
Buick specific DTC OBD2 code: P1404 Exhaust Gas Recirculation System Valve 2
Buick specific DTC OBD2 code: P1403 Exhaust Gas Recirculation System Valve 1
Buick specific DTC OBD2 code: P1399 Wheel Speed Sensor 2, G-Sensor Circuit Intermittent
Buick specific DTC OBD2 code: P1398 Wheel Speed Sensor 2, G-Sensor Circuit High Voltage
Buick specific DTC OBD2 code: P1397 Wheel Speed Sensor 2, G-Sensor Circuit Low Voltage