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P041E Exhaust Gas Recirculation Temperature Sensor “B” Circuit Intermittent/Erratic P041F Secondary Air Injection System Switching Valve “A” Circuit Low 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 1) P0424 Heated Catalyst Temperature Below Threshold (Bank 1) P0425 Catalyst Temperature Sensor (Bank 1, Sensor 1) P0426 Catalyst Temperature Sensor Range/Performance (Bank 1, Sensor 1) P0427 Catalyst Temperature Sensor Low (Bank 1, Sensor 1) P0428 Catalyst Temperature Sensor High (Bank 1, Sensor 1) P0429 Catalyst Heater Control Circuit (Bank 1) P042A Catalyst Temperature Sensor Circuit (Bank 1 Sensor 2) P042B Catalyst Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 2) P042C Catalyst Temperature Sensor Circuit Low (Bank 1 Sensor 2) P042D Catalyst Temperature Sensor Circuit High (Bank 1 Sensor 2) P042E Exhaust Gas Recirculation “A” Control Stuck Open P042F Exhaust Gas Recirculation “A” Control Stuck Closed 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) P0435 Catalyst Temperature Sensor Circuit Malfunction (Bank 2, Sensor 1) P0436 Catalyst Temperature Sensor Circuit Range/Performance (Bank 2, Sensor 1) P0437 Catalyst Temperature Sensor Circuit Low (Bank 2, Sensor 1) P0438 Catalyst Temperature Sensor Circuit High (Bank 2, Sensor 1) P0439 Catalyst Heater Control Circuit (Bank 2) P043A Catalyst Temperature Sensor Circuit (Bank 2 Sensor 2) P043B Catalyst Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2)

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