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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 P0136-11: O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground; DTC P0136-13: O2 Sensor Circuit Bank 1 Sensor 2 Circuit Open; DTC P0136-14: O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground or Open; DTC P0136-15: O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Battery or Open; DTC P0136-17: O2 Sensor Circuit Bank 1 Sensor 2 Circuit Voltage Above Threshold; DTC P0136-1C: O2 Sensor Circuit Bank 1 Sensor 2 Circuit Voltage Out of Range; DTC P0136-23: O2 Sensor Circuit Bank 1 Sensor 2 Signal Stuck Low; DTC P013A-00: O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2; DTC P013C-00: O2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 2; DTC P0156-11: O2 Sensor Circuit Bank 2 Sensor 2 Circuit Short to Ground; DTC P0156-13: O2 Sensor Circuit Bank 2 Sensor 2 Circuit Open; DTC P0156-14: O2 Sensor Circuit Bank 2 Sensor 2 Circuit Short to Ground or Open; DTC P0156-15: O2 Sensor Circuit Bank 2 Sensor 2 Circuit Short to Battery or Open; DTC P0156-17: O2 Sensor Circuit Bank 2 Sensor 2 Circuit Voltage Above Threshold; DTC P0156-1C: O2 Sensor Circuit Bank 2 Sensor 2 Circuit Voltage Out of Range; DTC P0156-23: O2 Sensor Circuit Bank 2 Sensor 2 Signal Stuck Low [12/2019 - 10/2022] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

P0136 AND P0156: HEATED OXYGEN SENSOR VOLTAGE CHECK (VOLTAGE MALFUNCTION)

All of the following conditions (a), (b) and (c) met -
(a) OSC (Oxygen Storage Capacity of Catalyst) 2 g or more
(b) Commanded air fuel ratio 14.3 or less
(c) Heated oxygen sensor voltage 0.21 V or higher, and less than 0.71 V
P0137 AND P0157: HEATED OXYGEN SENSOR VOLTAGE CHECK (LOW VOLTAGE)

All of the following conditions (a), (b) and (c) met -
(a) OSC (Oxygen Storage Capacity) of catalyst 2 g or more
(b) Commanded air fuel ratio 14.3 or less
(c) Heated oxygen sensor voltage Less than 0.21 V
P0136 AND P0156: HEATED OXYGEN SENSOR CIRCUIT CONTINUITY CHECK (CIRCUIT SHORT)

Duration of following condition 30 seconds or more
Heated oxygen sensor impedance Less than 5 Ω
P0137 AND P0157: HEATED OXYGEN SENSOR CIRCUIT CONTINUITY CHECK (CIRCUIT OPEN)

Duration of following condition 90 seconds or more
Heated oxygen sensor impedance 15 kΩ or higher
P0138 AND P0158: HEATED OXYGEN SENSOR CIRCUIT CONTINUITY CHECK (OUT OF RANGE)

Duration of following condition 10 seconds or more
Heated oxygen sensor voltage 1.2 V or higher
P0138 AND P0158: HEATED OXYGEN SENSOR VOLTAGE CHECK (HIGH VOLTAGE)

Both of following conditions are met -
(a) Commanded air fuel ratio 14.8 or more
(b) Heated oxygen sensor voltage Higher than 0.71 V
P0139 AND P0159: HEATED OXYGEN SENSOR RESPONSE RATE DURING FUEL CUT

Duration until heated oxygen sensor voltage drops to 0.2 V during fuel cut 7 seconds or more
P013A AND P013C: HEATED OXYGEN SENSOR RESPONSE RATE DURING FUEL CUT FROM RICH CONDITION

Duration that heated oxygen sensor voltage drops from 0.35 to 0.2 V during fuel cut (Normalized) 1 or more
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