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Home >> Mercury >> 2009 >> Sable Premier, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1255 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> DTC P0053: - Ho2S Heater Resistance (Bank 1, Sensor 1)

DTC P0053: - Ho2S Heater Resistance (Bank 1, Sensor 1)

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DTC P0053: - HO2S HEATER RESISTANCE (BANK 1, SENSOR 1)

Description:  Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit.
Possible Causes: 
  • VPWR circuit open
  • HO2S heater circuit open
  • HO2S heater circuit short in the harness
  • Damaged 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 
E-Series 4.6L,
E-Series 5.4L,
Expedition,
F-150,
Flex,
MKS,
Navigator,
Sable PZEV,
Taurus PZEV,
Taurus X PZEV		 GO to Pinpoint Test DZ .
All others GO to Pinpoint Test DW .
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