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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1633 (Engine Controls - Powertrain DTC Charts & Descriptions - DTC P0001 Through DTC P0217 - (Except Diesel & Hybrid)) >> DTC P0053: Ho2S Heater Resistance (Bank 1, Sensor 1)

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

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
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 
Edge,
Escape/Mariner 2.5L Automatic Transmission,
Escape/Mariner 3.0L,
E-Series 4.6L,
E-Series 5.4L,
Expedition,
Explorer,
F-150,
Flex,
F-Series Super Duty,
Fusion 2.5L,
Fusion 3.0L,
Milan,
MKS,
MKT,
MKX,
Mustang,
Navigator,
Taurus		 GO to PINPOINT TEST DZ .
All others GO to PINPOINT TEST DW .
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