LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2022 >> ES 250 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (A25A-FKS) - Diagnostic Codes (05 Of 12) >> 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 [08/2021 - ] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 [08/2021 - ]: Description

Refer to DTC P0400-00.

Refer to DESCRIPTION 

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
  • DTC for Mexico Models: Applies
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
  • DTC for Mexico Models: Applies
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
  • DTC for Mexico Models: Applies
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
  • DTC for Mexico Models: Applies