OBD Guide
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P0059

HO2S Heater Resistance Bank 2 Sensor 1

P0059 is an OBD-II diagnostic trouble code meaning: HO2S Heater Resistance Bank 2 Sensor 1. Common causes: break or short circuit in the heater wiring, failure of the heating element itself in the sensor. Estimated repair cost: $6–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–89 (est.)

Symptoms

  • Check Engine Light Illuminates
  • Increased fuel consumption
  • Unstable engine idling
  • Difficulty starting a cold engine
  • Reduced engine power
  • Black smoke from the exhaust pipe
  • Smell of fuel in the cabin

Causes

  • Break or short circuit in the heater wiring
  • Failure of the heating element itself in the sensor
  • Corroded or oxidized sensor connectors
  • Engine ECU malfunction
  • Damage to the oxygen sensor due to contamination
  • Blown fuse in the heater circuit
  • Poor contact in the sensor connector

How to Fix

  1. Connect a diagnostic scanner and read all error codes
  2. Check the condition of the oxygen sensor circuit fuses
  3. Visually inspect the sensor wiring and connectors for damage.
  4. Measure the resistance of the heater with a multimeter (should be 2-14 Ohms)
  5. Check the supply voltage at the sensor connector (should be 12V)
  6. If necessary, clean the connectors from oxides and corrosion.
  7. Replace the oxygen sensor if a malfunction is detected
  8. Eliminate breaks or short circuits in the wiring
  9. Clear error codes and test drive to check

Related codes

P0055P0056P0057P0058P0135P0141P0155P0161

Error P0059 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0059 code mean?

P0059 is an OBD-II diagnostic trouble code that indicates: HO2S Heater Resistance Bank 2 Sensor 1

What causes a P0059 error code?

The most common causes of P0059 include: Break or short circuit in the heater wiring; Failure of the heating element itself in the sensor; Corroded or oxidized sensor connectors; Engine ECU malfunction.

How do I fix a P0059 diagnostic trouble code?

To fix P0059: Connect a diagnostic scanner and read all error codes. Check the condition of the oxygen sensor circuit fuses. Visually inspect the sensor wiring and connectors for damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0059?

Limited driving only, diagnose soon

How much does it cost to fix P0059?

The estimated repair cost for P0059 is $6–89. Actual cost depends on your vehicle, location, and labor rates.

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