Generic DTC OBD2 code: P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
Generic DTC OBD2 code: P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
Generic DTC OBD2 code: P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
Generic DTC OBD2 code: P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
Generic DTC OBD2 code: P0420 Catalyst System Efficiency Below Threshold (Bank 1)
Generic DTC OBD2 code: P0419 Secondary Air Injection System Relay “B Circuit Malfunction
Generic DTC OBD2 code: P0418 Secondary Air Injection System Relay A” Circuit Malfunction
Generic DTC OBD2 code: P0417 Secondary Air Injection System Switching Valve B Circuit Shorted
Generic DTC OBD2 code: P0416 Secondary Air Injection System Switching Valve B Circuit Open
Generic DTC OBD2 code: P0415 Secondary Air Injection System Switching Valve B Circuit Malfunction