2.0L - DTCS P0420 To P0490

• DTC Troubleshooting
  • P0420-Catalyst System Efficiency Below Threshold Bank 1
    • Theory Of Operation
    • Diagnostic Overview - Catalyst System
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0426-Catalyst Temperature Sensor Circuit Performance (Bank 1 Sensor 1)
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0427-Catalyst Temperature Sensor Circuit Low (Bank 1 Sensor 1)
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0428-Catalyst Temperature Sensor Circuit High (Bank 1 Sensor 1)
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P042E-Exhaust Gas RECIRCULATION Control Stuck Open
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0441-EVAP Purge System Performance
    • Theory Of Operation
    • Component Functional Description - Turbo Purge Solenoid
    • Component Functional Description - Fuel Tank Pressure (Ftp) Sensor
    • Component Functional Description - OBD Vent Valve
    • Component Functional Description - Ejector Tee
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0443-EVAP Purge 1 Control Circuit
    • Theory Of Operation
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0461-Fuel Level Sensor 1 Performance
    • Functional Description - Fuel Level Sensors
    • Theory Of Operation - Fuel Level Rationality
    • Enabling/Set Conditions And Possible Causes - Fuel Level Sensor Faults
    • Check For An Active Or Intermittent Condition
    • Primary And Secondary Fuel Level Sensor Circuit Fault Diagnostics
    • Fuel Level Sensor Rationality Diagnostics (P0461, P2066)
    • Fuel Level Sensor Tables
    • Powertrain Verification Test
  • P0462-Fuel Level Sensor 1 Circuit Low
    • Functional Description - Fuel Level Sensors
    • Theory Of Operation - Fuel Level Rationality
    • Enabling/Set Conditions And Possible Causes - Fuel Level Sensor Faults
    • Check For An Active Or Intermittent Condition
    • Primary And Secondary Fuel Level Sensor Circuit Fault Diagnostics
    • Fuel Level Sensor Rationality Diagnostics (P0461, P2066)
    • Fuel Level Sensor Tables
    • Powertrain Verification Test
  • P0463-Fuel Level Sensor 1 Circuit High
    • Functional Description - Fuel Level Sensors
    • Theory Of Operation - Fuel Level Rationality
    • Enabling/Set Conditions And Possible Causes - Fuel Level Sensor Faults
    • Check For An Active Or Intermittent Condition
    • Primary And Secondary Fuel Level Sensor Circuit Fault Diagnostics
    • Fuel Level Sensor Rationality Diagnostics (P0461, P2066)
    • Fuel Level Sensor Tables
    • Powertrain Verification Test
  • P0489-EGR Control Circuit Low
    • Theory Of Operation
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test
  • P0490-EGR Control Circuit High
    • Theory Of Operation
    • When Monitored
    • Set Condition
    • Default Action
    • Possible Causes
    • Diagnostic Test