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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Engine Control System (A25A-FXS) - Diagnostic Codes (09 Of 20)) >> SFI System >> DTC P0403-18: Exhaust Gas Recirculation "A" Circuit Current Below Threshold; DTC P0403-19: Exhaust Gas Recirculation "A" Circuit Current Above Threshold; DTC P1400-18: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Below Threshold; DTC P1400-19: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Above Threshold [07/2019 - 08/2020] >> Description

DTC P0403-18: Exhaust Gas Recirculation "A" Circuit Current Below Threshold; DTC P0403-19: Exhaust Gas Recirculation "A" Circuit Current Above Threshold; DTC P1400-18: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Below Threshold; DTC P1400-19: Exhaust Gas Recirculation "A" Control Circuit 2 Circuit Current Above Threshold [07/2019 - 08/2020]: Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0400-00.

Refer to DESCRIPTION [07/2019 - 10/2019] , or refer to DESCRIPTION [10/2019 - 08/2020] 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P0403-18 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
P0403-19 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
P1400-18 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
P1400-19 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