P04xx · Auxiliary emission controls

P0478 Exhaust Pressure Control Valve High Powertrain P0479 Exhaust Pressure Control Valve Intermittent Powertrain P047A Exhaust Pressure Sensor B Circuit Powertrain P047B Exhaust Pressure Sensor B Circuit Range/Performance Powertrain P047C Exhaust Pressure Sensor B Circuit Low Powertrain P047D Exhaust Pressure Sensor B Circuit High Powertrain P047E Exhaust Pressure Sensor B Circuit Intermittent/Erratic Powertrain P047F Exhaust Pressure Control Valve A Stuck Open Powertrain P0480 Cooling Fan 1 Control Circuit Malfunction Powertrain P0481 Cooling Fan 2 Control Circuit Malfunction Powertrain P0482 Cooling Fan 3 Control Circuit Malfunction Powertrain P0483 Fan Rationality Check Powertrain P0484 Fan Circuit Over Current Powertrain P0485 Cooling Fan Power/Ground Circuit Malfunction Powertrain P0486 Exhaust Gas Recirculation Sensor 'B' Circuit Powertrain P0487 Exhaust Gas Recirculation Throttle Position Control Circuit Powertrain P0488 Exhaust Gas Recirculation Throttle Position Control Range/Performance Powertrain P0489 Exhaust Gas Recirculation Control Circuit Low Powertrain P048A Exhaust Pressure Control Valve A Stuck Closed Powertrain P048B Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Powertrain P048C Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Range/Performance Powertrain P048D Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Low Powertrain P048E Exhaust Pressure Control Valve A Position Sensor/Switch Circuit High Powertrain P048F Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Intermittent/Erratic Powertrain P0490 Exhaust Gas Recirculation Control Circuit High Powertrain P0491 Secondary Air Injection System Insufficient Flow (Bank 1) Powertrain P0492 Secondary Air Injection System Insufficient Flow (Bank 2) Powertrain P0493 Fan Overspeed Powertrain P0494 Fan Speed Low Powertrain P0495 Fan Speed High Powertrain P0496 Evaporative Emission System High Purge Flow Powertrain P0497 Evaporative Emission System Low Purge Flow Powertrain P0498 Evaporative Emission System Vent Valve Control Circuit Low Powertrain P0499 Evaporative Emission System Vent Valve Control Circuit High Powertrain P049A EGR B Flow Powertrain P049B EGR B Flow Insufficient Detected Powertrain P049C EGR B Flow Excessive Detected Powertrain P049D EGR A Control Position Exceeded Learning Limit Powertrain P049E EGR B Control Position Exceeded Learning Limit Powertrain P049F Exhaust Pressure Control Valve B Powertrain P04A0 Exhaust Pressure Control Valve B Range/Performance Powertrain P04A1 Exhaust Pressure Control Valve B Low Powertrain P04A2 Exhaust Pressure Control Valve B High Powertrain P04A3 Exhaust Pressure Control Valve B Intermittent Powertrain P04A4 Exhaust Pressure Control Valve B Stuck Open Powertrain P04A5 Exhaust Pressure Control Valve B Stuck Closed Powertrain P04A6 Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Powertrain P04A7 Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Range/Performance Powertrain P04A8 Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Low Powertrain P04A9 Exhaust Pressure Control Valve B Position Sensor/Switch Circuit High Powertrain P04AA Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Intermittent/Erratic Powertrain P04AB EVAP System Purge Control Valve B Circuit/Open Powertrain P04AC EVAP System Purge Control Valve B Circuit Low Powertrain P04AD EVAP System Purge Control Valve B Circuit High Powertrain P04AE EVAP System Purge Control Valve B Performance/Stuck Open Powertrain P04AF EVAP System Purge Control Valve B Stuck Closed Powertrain P04B0 Refueling Vapor Control Valve Circuit/Open Powertrain P04B1 Refueling Vapor Control Valve Circuit Low Powertrain P04B2 Refueling Vapor Control Valve Circuit High Powertrain P04B3 Refueling Vapor Control Valve Performance/Stuck Open Powertrain