P1421 Buick
Intake Air Low Pressure Switch Circuit High Voltage
Buick
P1423 Buick
Intake Air High Pressure Switch Circuit High Voltage
P1408 Buick
Intake Manifold Pressure Sensor Circuit
P1410 Buick
Fuel Tank Pressure System
P1415 Buick
Secondary Air Injection System Bank 1
P1416 Buick
Secondary Air Injection System Bank 2
P1404 Buick
Exhaust Gas Recirculation Closed Position Performance
P1405 Buick
Exhaust Gas Recirculation System Valve 3
P1406 Buick
EGR Valve Pintle Position Circuit
P1397 Buick
Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage