P0053 - Ho2S Heater Resistance (Bank 1 Sensor 1)

P0053 - HO2S HEATER RESISTANCE (BANK 1 SENSOR 1)

Description:	This DTC sets when the heater current requirements are too low or too high in the UO2SHTR11 circuit (if equipped) or HTR11 circuit (if equipped).
Possible Causes:	VPWR circuit open UO2SHTR11 circuit open (if equipped) UO2SHTR11 circuit short (if equipped) HTR11 circuit open (if equipped) Damaged universal heated oxygen sensor bank 1, sensor 1 (HO2S11) (if equipped) Damaged HO2S11 (if equipped)
Diagnostic Aids:	Inspect the connectors for signs of damage, water intrusion or corrosion.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
KA	GO to Pinpoint Test DW .
All others	GO to Pinpoint Test DZ .