DTC P0155: O2 Heater Circuit (Bank 2, Sensor 1)

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DTC P0155: O2 HEATER CIRCUIT (BANK 2, SENSOR 1)

Description:	This DTC sets when an open or short circuit is detected or the HO2S heater current draw exceeds a calibrated limit.
Possible Causes:	UO2SHTR circuit open (if equipped) UO2SHTR circuit short to voltage (if equipped) VPWR circuit open GND circuit open Low battery voltage Water in the harness connector Corrosion Incorrect connections Damaged universal HO2S heater
Diagnostic Aids:	Inspect the connectors for signs of damage, water ingress, or corrosion.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST DZ .