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HOMESERVICE MANUALSHYUNDAI2014SANTA FE XL PREMIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 3)DTC P0056: HO2S HEATER CONTROL CIRCUIT (BANK 2/SENSOR 2)DTC INFORMATIONDTC DETECTING CONDITION
2014 Hyundai Santa Fe XL Premium

DTC Information: DTC Detecting Condition

2014 Hyundai Santa Fe XL PremiumSECTION DTC Detecting Condition
Item Detecting Condition Possible Cause
DTC Strategy
  • Monitor the current through the heater
  1. Poor Connection
  2. HO2S (B2/S2)
  3. PCM
Enable Conditions
  • Engine Running longer than 60 sec.
  • Heater Duty Cycle greater than 40%
  • Max. Duty Cycle - Min. Duty Cycle less than 5%
Threshold value
  • Filtered Heater Current less than threshold value
Diagnosis Time
  • Continuous (More than 2.5 second failure for every 5 second test)
MIL On Condition
  • 2 Driving Cycles
RENDER: 1.0x

NO RELATED

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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.