P0423 OBD Code Definition:
P0423 Heated Catalyst Efficiency Below Threshold Bank 1
P0423 OBD Code Description: Continue reading →

P0424 OBD Code Definition:
P0424 Heated Catalyst Temperature Below Threshold Bank 1
P0424 OBD Code Description: Continue reading →

P0425 OBD Code Definition:
P0425 Catalyst Temperature Sensor Circuit Bank 1 Sensor 1
P0425 OBD Code Description: Continue reading →

P0426 OBD Code Definition:
P0426 Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
P0426 OBD Code Description: Continue reading →

P0427 OBD Code Definition:
P0427 Catalyst Temperature Sensor Low Input Bank 1 Sensor 1
P0427 OBD Code Description: Continue reading →

P0428 OBD Code Definition:
P0428 Catalyst Temperature Sensor High Input Bank 1 Sensor 1
P0428 OBD Code Description: Continue reading →

P0429 OBD Code Definition:
P0429 Catalyst Heater Control Circuit Bank 1
P0429 OBD Code Description: Continue reading →

P042E OBD Code Definition:
P042E EGR valve stuck open
P042E OBD Code Description: Continue reading →

P042F OBD Code Definition:
P042F EGR valve stuck closed
P042F OBD Code Description: Continue reading →

P0430 OBD Code Definition:
P0430 Catalyst System Efficiency Below Threshold Bank 2
P0430 OBD Code Description: Continue reading →

P0431 OBD Code Definition:
P0431 Warm Up Catalyst Efficiency Below Threshold Bank 2
P0431 OBD Code Description: Continue reading →

P0432 OBD Code Definition:
P0432 Main Catalyst Efficiency Below Threshold Bank 2
P0432 OBD Code Description: Continue reading →

P0433 OBD Code Definition:
P0433 Heated Catalyst Efficiency Below Threshold Bank 2
P0433 OBD Code Description: Continue reading →

P0434 OBD Code Definition:
P0434 Heated Catalyst Temperature Below Threshold Bank 2
P0434 OBD Code Description: Continue reading →

P0435 OBD Code Definition:
P0435 Catalyst Temperature Sensor Circuit Bank 2 Sensor 1
P0435 OBD Code Description: Continue reading →

P0436 OBD Code Definition:
P0436 Catalyst Temperature Sensor Range/Performance Bank 2 Sensor 1
P0436 OBD Code Description: Continue reading →

P0437 OBD Code Definition:
P0437 Catalyst Temperature Sensor Low Input Bank 2 Sensor 1
P0437 OBD Code Description: Continue reading →

P0438 OBD Code Definition:
P0438 Catalyst Temperature Sensor High Input Bank 2 Sensor 1
P0438 OBD Code Description: Continue reading →

P0439 OBD Code Definition:
P0439 Catalyst Heater Control Circuit Bank 2
P0439 OBD Code Description: Continue reading →

P0440 OBD Code Definition:
P0440 EVAP Canister Purge Regulator Valve
P0440 OBD Code Description: Continue reading →