DTC P0135 - O2 Sensor Heater Circuit (Bank 1 Sensor 1)

DTC DESCRIPTION P0135 - O2 SENSOR HEATER CIRCUIT (BANK 1 SENSOR 1)

Description: This DTC sets when an open or short is detected or the universal heated oxygen sensor (HO2S) current draw exceeds a calibrated limit.
Possible Causes: UO2SHTR circuit open UO2SHTR circuit short to voltage VPWR circuit open GND circuit open Low battery voltage Water in the harness connector Corrosion Incorrect connections Damaged universal HO2S
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 .