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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 52 (Engine Control System (A25A-FXS) - Diagnostic Codes (P0128-P0171)) >> SFI System >> DTC P0136-16: A/F (O2) Sensor Circuit Bank 1 Sensor 2 Circuit Current (Voltage) Below Threshold; DTC P013A-7C: A/F Sensor - Rich to Lean Bank 1 Sensor 2 Slow Response [12/2019 - 10/2022] >> Description

DTC P0136-16: A/F (O2) Sensor Circuit Bank 1 Sensor 2 Circuit Current (Voltage) Below Threshold; DTC P013A-7C: A/F Sensor - Rich to Lean Bank 1 Sensor 2 Slow Response [12/2019 - 10/2022]: Description

WARNING: This page is about a different variant/trim than selected.

Refer to DTC P0036-12.

Refer to DESCRIPTION

HINT: 

Although the DTC title say O2 sensor, this DTC relate to the air fuel ratio sensor (sensor 2).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P0136-16 A/F (O2) Sensor Circuit Bank 1 Sensor 2 Circuit Current (Voltage) Below Threshold Either of the following conditions is met (2 trip detection logic).
  • During active rich air-fuel ratio control, the air fuel ratio sensor (sensor 2) current is 6 mA or more
  • During active rich air-fuel ratio control, the oxygen storage capacity of the catalyst is more than 1.52 g when the air fuel ratio sensor (sensor 2) current is -0.25696 mA or higher
  • Air fuel ratio sensor (sensor 2)
  • Air fuel ratio sensor (sensor 1)
  • Gas leak from exhaust system
  • EGR valve assembly
  • Fuel system
  • Intake system
Comes on DTC stored SAE Code: P0136
P013A-7C A/F Sensor - Rich to Lean Bank 1 Sensor 2 Slow Response During a fuel cut, the amount of time it takes for the current of the air fuel ratio sensor (sensor 2) to increase to a certain amount is equal to or greater than the threshold (1 trip detection logic).
  • Air fuel ratio sensor (sensor 2)
  • Gas leak from exhaust system
Comes on DTC stored SAE Code: P013A