P0400 Exhaust Gas Recirculation Plow Malfunction

P0401 Exhaust Gas Recirculation Flow Insufficient Detected

P0402 Exhaust Gas Recirculation flow Excessive Detected

P0403 Exhaust Gas Recirculation Circuit Malfunction

P0404 Exhaust Gas Recirculation Circuit Range/Performance

P0405 Exhaust Gas Recirculation Sensor A Circuit Low

P0406 Exhaust Gas Recirculation Sensor A Circuit High

P0407 Exhaust Gas Recirculation Sensor B Circuit Low

P0408 Exhaust Gas Recirculation Sensor B Circuit High

P0410 Secondary Air Injection System Malfunction

P0411 Secondary Air Injection System Incorrect Flow Detected

P0412 Secondary Air Injection System Switching Valve A Circuit Malfunction

P0413 Secondary Air Injection System Switching Valve A Circuit Open

P0414 Secondary Air Injection System Switching Valve A Circuit Shorted

P0415 Secondary Air Injection System Switching Valve B Circuit Malfunction

P0416 Secondary Air Injection System Switching Valve B Circuit Open

P0417 Secondary Air Injection System Switching Valve B Circuit Shorted

P0418 Secondary Air Injection System Relay "A" circuit Malfunction

P0419 Secondary Air Injection System Relay "B” Circuit Malfunction

P0420 Catalyst System Efficiency Below Threshold (Bank 1)

P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)

P0422 Main Catalyst Efficiency Below Threshold (Bank 1)

P0423 Heated Catalyst Efficiency Below Threshold (Bank l)

P0424 Heated Catalyst Temperature Below Threshold (Bank 1)

P0430 Catalyst System Efficiency Below Threshold (Bank 2)

P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)

P0432 Main Catalyst Efficiency Below Threshold (Bank 2)

P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)

P0434 Heated Catalyst Temperature Below Threshold (Bank 2)

P0440 Evaporative Emission Control System Malfunction

P0441 Evaporative Emission Control System Incorrect Purge flow

P0442 Evaporative Emission Control System leak Detected (small leak)

P0443 Evaporative Emission Control System Purge Control Valve circuit Malfunction

P0444 Evaporative Emission Control System Purge Control Valve Circuit Open

P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted

P0446 Evaporative Emission Control System Vent Control Circuit Malfunction

P0447 Evaporative Emission Control System Vent Control Circuit Open

P0448 Evaporative Emission Control System Vent Control Circuit Shorted

P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

P0450 Evaporative Emission Control System Pressure Sensor Malfunction