P0161 - O2 Heater Circuit (Bank 2, Sensor 2) - DTC Chart

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P0161 - O2 HEATER CIRCUIT (BANK 2, SENSOR 2) - DTC CHART

Description: This DTC sets when an open or short circuit is detected or the universal heated oxygen sensor bank 2, sensor 2 (HO2S22) heater current draw exceeds a calibrated limit.
Possible Causes: HTR22 circuit open HTR22 circuit short to voltage VPWR circuit open GND circuit open Low battery voltage Water in the harness connector Corrosion Incorrect connections Damaged HO2S22 heater
Diagnostic Aids: Inspect the connectors for signs of damage, water intrusion or corrosion.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to Pinpoint Test DW .