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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 P2195-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold; DTC P2195-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Signal Stuck High; DTC P2196-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Circuit Current Below Threshold; DTC P2196-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Signal Stuck Low; DTC P2197-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1 Circuit Current Above Threshold; DTC P2197-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1 Signal Stuck High; DTC P2198-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1 Circuit Current Below Threshold; DTC P2198-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1 Signal Stuck Low [12/2019 - 10/2022] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

P2195 AND P2197: SENSOR VOLTAGE DETECTION MONITOR (LEAN SIDE MALFUNCTION)

Heated oxygen sensor voltage 0.21 V or higher
Air fuel ratio sensor voltage Higher than 3.8 V
P2196 AND P2198: SENSOR VOLTAGE DETECTION MONITOR (RICH SIDE MALFUNCTION)

Heated oxygen sensor voltage Less than 0.71 V
Air fuel ratio sensor voltage Less than 2.8 V
P2195 AND P2197: SENSOR CURRENT DETECTION MONITOR (HIGH SIDE MALFUNCTION)

Duration of following condition 3 seconds or more
Air fuel ratio sensor current 2.2 mA or higher
P2196 AND P2198: SENSOR CURRENT DETECTION MONITOR (LOW SIDE MALFUNCTION)

Duration of following condition 3 seconds or more
Air fuel ratio sensor current Less than 0.47 mA
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