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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (2 Of 6) >> SFI System >> DTC P014C-00: O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1; DTC P014D-00: O2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 1; DTC P014E-00: O2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 1; DTC P014F-00: O2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 1; DTC P015A-00: O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1; DTC P015B-00: O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1; DTC P015C-00: O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1; DTC P015D-00: O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1 [12/2019 - 10/2022] >> Description

DTC P014C-00: O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1; DTC P014D-00: O2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 1; DTC P014E-00: O2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 1; DTC P014F-00: O2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 1; DTC P015A-00: O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1; DTC P015B-00: O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1; DTC P015C-00: O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1; DTC P015D-00: O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1 [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
P014C-00 O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1 The "Rich to Lean response rate deterioration level*" value is standard or less (2 trip detection logic).
  • Air fuel ratio sensor (bank 1 sensor 1)
  • Air fuel ratio sensor (bank 1 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P014C
DTC for Mexico Models:
- Does not apply
P014D-00 O2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 1 The "Lean to Rich response rate deterioration level*" value is standard or more (2 trip detection logic).
  • Air fuel ratio sensor (bank 1 sensor 1)
  • Air fuel ratio sensor (bank 1 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P014D
DTC for Mexico Models:
- Does not apply
P014E-00 O2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 1 The "Rich to Lean response rate deterioration level*" value is standard or less (2 trip detection logic).
  • Air fuel ratio sensor (bank 2 sensor 1)
  • Air fuel ratio sensor (bank 2 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P014E
DTC for Mexico Models:
- Does not apply
P014F-00 O2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 1 The "Lean to Rich response rate deterioration level*" value is standard or more (2 trip detection logic).
  • Air fuel ratio sensor (bank 2 sensor 1)
  • Air fuel ratio sensor (bank 2 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P014F
DTC for Mexico Models:
- Does not apply
P015A-00 O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 The "Rich to Lean delay level*" value is standard or more (2 trip detection logic).
  • Air fuel ratio sensor (bank 1 sensor 1)
  • Air fuel ratio sensor (bank 1 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P015A
DTC for Mexico Models:
- Does not apply
P015B-00 O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1 The "Lean to Rich delay level*" value is standard or more (2 trip detection logic).
  • Air fuel ratio sensor (bank 1 sensor 1)
  • Air fuel ratio sensor (bank 1 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P015B
DTC for Mexico Models:
- Does not apply
P015C-00 O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1 The "Rich to Lean delay level*" value is standard or more (2 trip detection logic).
  • Air fuel ratio sensor (bank 2 sensor 1)
  • Air fuel ratio sensor (bank 2 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P015C
DTC for Mexico Models:
- Does not apply
P015D-00 O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1 The "Lean to Rich delay level*" value is standard or more (2 trip detection logic).
  • Air fuel ratio sensor (bank 2 sensor 1)
  • Air fuel ratio sensor (bank 2 sensor 1) heater
  • ECM
Comes on DTC stored SAE Code: P015D
DTC for Mexico Models:
- Does not apply

*: Calculated by ECM based on the air fuel ratio sensor output.