Monitor Strategy

Related DTCs

P0136: Heated oxygen sensor output voltage (Abnormal voltage output)

P0136: Heated oxygen sensor impedance (Low)

P0137: Heated oxygen sensor output voltage (Low voltage)

P0137: Heated oxygen sensor impedance (High)

P0138: Heated oxygen sensor output voltage (High voltage)

P0138: Heated oxygen sensor output voltage (Extremely high)

Required Sensors/Components (Main)

Heated oxygen sensor

Required Sensors/Components (Related)

Crankshaft position sensor, engine coolant temperature sensor, mass air flow meter and throttle position sensor

Frequency of Operation

Once per driving cycle: Active air-fuel ratio control detection Continuous: Other

Duration

20 seconds: Heated oxygen sensor output voltage (Abnormal voltage output, High voltage and Low voltage) 90 seconds: Heated oxygen sensor impedance (High) 30 seconds: Heated oxygen sensor impedance (Low) 10 seconds: Output voltage (Stuck high)

MIL Operation

2 driving cycles

Sequence of Operation

None

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