OBD II Trouble Code Definitions

OBD2 Diagnostic Trouble Code Tables 1995 - 2016
  • - Exhaust Gas Recirculation Flow Malfunction
  • - Exhaust Gas Recirculation Flow Insufficient Detected
  • - Exhaust Gas Recirculation Flow Excessive Detected
  • - Exhaust Gas Recirculation Circuit Malfunction
  • - Exhaust Gas Recirculation Circuit Range/Performance
  • - Exhaust Gas Recirculation Sensor A Circuit Low
  • - Exhaust Gas Recirculation Sensor A Circuit High
  • - Exhaust Gas Recirculation Sensor B Circuit Low
  • - Exhaust Gas Recirculation Sensor B Circuit High
  • - Secondary Air Injection System Malfunction
  • - Secondary Air Injection System Incorrect Flow Detected
  • - 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
  • - Secondary Air Injection System Relay "A" Circuit Malfunction
  • - Secondary Air Injection System Relay "B" Circuit Malfunction
  • - Catalyst System Efficiency Below Threshold (Bank 1)
  • - Warm Up Catalyst Efficiency Below Threshold (Bank 1)
  • - Main Catalyst Efficiency Below Threshold (Bank 1)
  • P0423
    - Heated Catalyst Efficiency Below Threshold (Bank 1)
  • P0424
    - Heated Catalyst Temperature Below Threshold (Bank 1)
  • - Catalyst System Efficiency Below Threshold (Bank 2)
  • - Warm Up Catalyst Efficiency Below Threshold (Bank 2)
  • - Main Catalyst Efficiency Below Threshold (Bank 2)
  • P0433
    - Heated Catalyst Efficiency Below Threshold (Bank 2)
  • P0434
    - Heated Catalyst Temperature Below Threshold (Bank 2)
  • - Evaporative Emission Control System Malfunction
  • - Evaporative Emission Control System Incorrect Purge Flow
  • - Evaporative Emission Control System Leak Detected (small leak)
  • - Evaporative Emission Control System Purge Control Valve Circuit Malfunction
  • - Evaporative Emission Control System Purge Control Valve Circuit Open
  • - Evaporative Emission Control System Purge Control Valve Circuit Shorted
  • - Evaporative Emission Control System Vent Control Circuit Malfunction
  • P0447
    - Evaporative Emission Control System Vent Control Circuit Open
  • - Evaporative Emission Control System Vent Control Circuit Shorted
  • - Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
  • - Evaporative Emission Control System Pressure Sensor Malfunction
  • - Evaporative Emission Control System Pressure Sensor Range/Performance
  • - Evaporative Emission Control System Pressure Sensor Low Input
  • - Evaporative Emission Control System Pressure Sensor High Input
  • - Evaporative Emission Control System Pressure Sensor Intermittent
  • - Evaporative Emission Control System Leak Detected (gross leak)
  • - EVAP Leak Monitor Small Leak Detected
  • - Fuel Level Sensor Circuit Malfunction
  • - Fuel Level Sensor Circuit Range/Performance
  • - Fuel Level Sensor Circuit Low Input
  • - Fuel Level Sensor Circuit High Input
  • - Fuel Level Sensor Circuit Intermittent
  • P0465
    - Purge Flow Sensor Circuit Malfunction
  • - Purge Flow Sensor Circuit Range/Performance
  • P0467
    - Purge Flow Sensor Circuit Low Input
  • P0468
    - Purge Flow Sensor Circuit High Input
  • P0469
    - Purge Flow Sensor Circuit Intermittent
  • P0470
    - Exhaust Pressure Sensor Malfunction
  • - Exhaust Pressure Sensor Range/Performance
  • P0472
    - Exhaust Pressure Sensor Low
  • - Exhaust Pressure Sensor High
  • P0474
    - Exhaust Pressure Sensor Intermittent
  • P0475
    - Exhaust Pressure Control Valve Malfunction
  • P0476
    - Exhaust Pressure Control Valve Range/Performance
  • P0477
    - Exhaust Pressure Control Valve Low
  • P0478
    - Exhaust Pressure Control Valve High
  • P0479
    - Exhaust Pressure Control Valve Intermittent
  • - Cooling Fan 1 Control Circuit Malfunction
  • - Cooling Fan 2 Control Circuit Malfunction
  • P0482
    - Cooling Fan 3 Control Circuit Malfunction
  • - Cooling Fan Rationality Check Malfunction
  • P0484
    - Cooling Fan Circuit Over Current
  • P0485
    - Cooling Fan Power/Ground Circuit Malfunction
  • Please go to our P0400-P0499 forum for aditional codes and for questions and answers about your particular trouble code.