Heated Oxygen Sensor (HO2S): Specification

2014 Hyundai Santa Fe XL LimitedSECTION Specification
VOLTAGE SPECIFICATION - BANK 1/SENSOR 2, BANK 2/SENSOR 2

A/F Ratio (λ) Output Voltage (V)
RICH Min. 0.8
LEAN Max. 0.1
Item Specification
Heater Resistance (Ω) 3.3 ~ 4.1[20°C (68°F)]
VOLTAGE SPECIFICATION - BANK 1/SENSOR 1, BANK 2/SENSOR 1

A/F Ratio (λ) Output Voltage (V)
RICH 0.6 ~ 1.0
LEAN 0 ~ 0.4
Item Specification
Heater Resistance (Ω) About 9.0[20°C (68°F)]
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.