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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (2GR-FKS) - Diagnostic Codes (6 Of 6) & Circuit Tests (1 Of 2) >> SFI System >> DTC P2A00-26: O2 Sensor Circuit Range/Performance Bank 1 Sensor 1 Signal Rate of Change Below Threshold; DTC P2A03-26: O2 Sensor Circuit Range/Performance Bank 2 Sensor 1 Signal Rate of Change Below Threshold [12/2019 - 10/2022] >> Description

DTC P2A00-26: O2 Sensor Circuit Range/Performance Bank 1 Sensor 1 Signal Rate of Change Below Threshold; DTC P2A03-26: O2 Sensor Circuit Range/Performance Bank 2 Sensor 1 Signal Rate of Change Below Threshold [12/2019 - 10/2022]: Description

Refer to DTC P0030-12.

Refer to DESCRIPTION

HINT: 

Although the DTC titles say oxygen sensor, these DTCs relate to the air fuel ratio sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P2A00-26 O2 Sensor Circuit Range/Performance Bank 1 Sensor 1 Signal Rate of Change Below Threshold The calculated value for the air fuel ratio sensor response rate deterioration level is less than the threshold (2 trip detection logic).
  • Air fuel ratio sensor (bank 1 sensor 1)
  • Intake system
  • Fuel injector assembly (for port injection)
  • Fuel injector assembly (for direct injection)
  • Fuel pressure (for low pressure side)
  • Fuel pressure (for high pressure side)
  • Fuel system
  • ECM
Comes on DTC stored SAE Code: P2A00
DTC for Mexico Models:
- Applies
(Mexico models only)
P2A03-26 O2 Sensor Circuit Range/Performance Bank 2 Sensor 1 Signal Rate of Change Below Threshold The calculated value for the air fuel ratio sensor response rate deterioration level is less than the threshold (2 trip detection logic).
  • Air fuel ratio sensor (bank 2 sensor 1)
  • Intake system
  • Fuel injector assembly (for port injection)
  • Fuel injector assembly (for direct injection)
  • Fuel pressure (for low pressure side)
  • Fuel pressure (for high pressure side)
  • Fuel system
  • ECM
Comes on DTC stored SAE Code: P2A03
DTC for Mexico Models:
- Applies
(Mexico models only)