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Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (SFI) (M20A-FXS) - Diagnostic Codes (3 Of 6) (Hybrid) >> SFI System >> DTC P0403-18: Exhaust Gas Recirculation "A" Circuit Current Below Threshold; DTC P040319: Exhaust Gas Recirculation "A" Circuit Current Above Threshold; DTC P140018: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Below Threshold; DTC P140019: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Above Threshold [10/2020 - ] >> Description
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DTC P0403-18: Exhaust Gas Recirculation "A" Circuit Current Below Threshold; DTC P040319: Exhaust Gas Recirculation "A" Circuit Current Above Threshold; DTC P140018: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Below Threshold; DTC P140019: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Above Threshold [10/2020 - ]: Description

Refer to DTC P040000.

Refer to DTC P0400-00: Exhaust Gas Recirculation "A" Flow; DTC P04019C: Exhaust Gas Recirculation "A" Low / Insufficient Flow; DTC P04029B: Exhaust Gas Recirculation "A" High/Excessive Flow [10/2020 - 08/2021] Refer to DTC P0400-00: Exhaust Gas Recirculation "A" Flow; DTC P04019C: Exhaust Gas Recirculation "A" Low / Insufficient Flow; DTC P04029B: Exhaust Gas Recirculation "A" High/Excessive Flow [08/2021 - ] 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P040318 Exhaust Gas Recirculation "A" Circuit Current Below Threshold Open or short in EGR A circuit for 1 second or more (1 trip detection logic).
  • Open or short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM
Comes on DTC stored SAE Code: P0489
P040319 Exhaust Gas Recirculation "A" Circuit Current Above Threshold Short in EGR A circuit for 1 second or more (1 trip detection logic).
  • Short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM
Comes on DTC stored SAE Code: P0490
P140018 Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Below Threshold Open or short in EGR B circuit for 1 second or more (1 trip detection logic).
  • Open or short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM
Comes on DTC stored SAE Code: P0489
P140019 Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Above Threshold Short in EGR B circuit for 1 second or more (1 trip detection logic).
  • Short in EGR valve assembly circuit
  • EGR valve assembly
  • ECM
Comes on DTC stored SAE Code: P0490