What is the general information regarding Heated Oxygen Sensors (HO2S) in Hyundai Elantra?

All vehicles covered are equipped with an upstream and a downstream Heated Oxygen Sensor (HO2S). The upstream HO2S is located ahead of the catalytic converter on models from 1996 to 2000, while on 2001 and later models, it is found in the exhaust manifold; the downstream HO2S is positioned behind the converter. The upstream HO2S monitors the oxygen content in the exhaust gas stream, producing a voltage output ranging from 100 millivolts for a lean mixture to 800 millivolts for a rich mixture, which the PCM uses to adjust the air/fuel mixture for optimal emissions. The HO2S must reach approximately 600 degrees F to function correctly, and during warm-up, the PCM operates in open loop mode. Proper operation of the oxygen sensor depends on clean electrical connections, adequate air supply, correct operating temperature, and the use of unleaded fuel. The downstream HO2S functions similarly but is used by the PCM to monitor catalytic converter efficiency. Caution is advised as the HO2S is sensitive to circuit loads; testing should be done with a digital voltmeter, and care should be taken to avoid damaging the sensor. Voltage readings from the upstream HO2S should fluctuate between 100 and 800 millivolts, while the downstream HO2S should remain stable. Battery voltage and ground circuits should be checked, and the oxygen sensor heater should be tested for an open circuit. If issues persist, the wiring harness and connectors should be inspected. For replacement, the exhaust pipe should be warmed to ease removal, and care should be taken to avoid damaging the HO2S or its connectors. Anti-seize compound should be applied to the threads before installation, and the sensor should be tightened to the specified torque before reconnecting the electrical connector and lowering the vehicle.

Genuine Hyundai Elantra Oxygen Sensor

Oxygen O2 Sensor

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38 Oxygen Sensors found

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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2E101
$167.68 MSRP: $235.58
You Save: $67.90 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2016-2020 Hyundai Elantra | DOHC - MPI | Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2E100
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2011-2015 Hyundai Elantra | DOHC - GDI, DOHC - MPI | Coupe - 2Door 5P, Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-23750
$118.54 MSRP: $166.55
You Save: $48.01 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2000-2006 Hyundai Elantra | High Grade, Middle Grade | 4 Door Sedan, 5 Door Sedan
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2ECC2
$84.87 MSRP: $119.24
You Save: $34.37 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Lower Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2019-2020 Hyundai Elantra | DOHC - MPI | Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2ECC0
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2016-2020 Hyundai Elantra | DOHC - MPI, DOHC - TCI/GDI | Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen,Front
Part Number: 39210-03130
$133.66 MSRP: $187.79
You Save: $54.13 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Oxygen Sensor, Upper Oxygen Sensor
- Position: Front
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2021-2023 Hyundai Elantra | DOHC - GDI | Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2E500
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2011-2015 Hyundai Elantra | DOHC - GDI, DOHC - MPI | Coupe - 2Door 5P, Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2E200
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2011-2015 Hyundai Elantra | DOHC - GDI, DOHC - MPI | Coupe - 2Door 5P, Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-23700
$209.78 MSRP: $289.69
You Save: $79.91 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2000-2006 Hyundai Elantra | High Grade, Middle Grade | 4 Door Sedan, 5 Door Sedan
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-23500
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2000-2006 Hyundai Elantra | High Grade, Middle Grade | 4 Door Sedan, 5 Door Sedan
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-23026
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Front Oxygen Sensor, Oxygen Sensor
- Manufacturer Note: CCC
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 1995-2000 Hyundai Elantra | High Grade, Middle Grade | 4 Door, 5 Door Wagon 5
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Hyundai Elantra Sensor Assembly-Oxygen(MCC)
Part Number: 39210-23900
$252.32 MSRP: $354.50
You Save: $102.18 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Oxygen; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2006-2010 Hyundai Elantra | High Grade, Middle Grade | DOHC - MPI | 4 Door Sedan, Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2E400
$148.00 MSRP: $207.94
You Save: $59.94 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2011-2015 Hyundai Elantra | DOHC - GDI, DOHC - MPI | Coupe - 2Door 5P, Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen(MCC)
Part Number: 39210-23910
$269.56 MSRP: $378.73
You Save: $109.17 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Oxygen; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2006-2010 Hyundai Elantra | DOHC - MPI | Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-22620
$158.78 MSRP: $223.08
You Save: $64.30 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2000-2006 Hyundai Elantra | High Grade, Middle Grade | 4 Door Sedan, 5 Door Sedan
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-23950
$152.88 MSRP: $214.79
You Save: $61.91 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2006-2010 Hyundai Elantra | High Grade, Middle Grade | DOHC - MPI | 4 Door Sedan, Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-03140
$146.53 MSRP: $205.87
You Save: $59.34 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Lower Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2021-2023 Hyundai Elantra | DOHC - GDI | Sedan - 4Door 5P
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Hyundai Elantra Sensor Assembly-Oxygen,Front
Part Number: 39210-2B510
$131.30 MSRP: $184.47
You Save: $53.17 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Position: Front
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2016-2020 Hyundai Elantra | DOHC - TCI/GDI | Sedan - 4Door 5P
View related parts
Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-2B345
$133.35 MSRP: $187.35
You Save: $54.00 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2016-2020 Hyundai Elantra | DOHC - TCI/GDI | Sedan - 4Door 5P
View related parts
Hyundai Elantra Sensor Assembly-Oxygen
Part Number: 39210-33070
$142.57 MSRP: $200.31
You Save: $57.74 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Front Oxygen Sensor, Oxygen Sensor
- Manufacturer Note: YOUNGSIN METAL
- Replaces: 39210-33030
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 1991-1995 Hyundai Elantra | High Grade, Middle Grade | 4 Door

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Hyundai Elantra Oxygen Sensor

If you are looking for affordable high-quality OEM Hyundai Elantra Oxygen Sensor, then you have come to the prime place. Our website provides a large amount of genuine Hyundai Elantra Oxygen Sensor at unbeatable prices. All our parts come backed with the manufacturer's warranty.

Hyundai Elantra Oxygen Sensor Parts Questions & Experts Answers

Sensor Assembly-Oxygen
39210-23750
Q: What is the general information regarding Heated Oxygen Sensors (HO2S) in Hyundai Elantra?
A: All vehicles covered are equipped with an upstream and a downstream Heated Oxygen Sensor (HO2S). The upstream HO2S is located ahead of the Catalytic Converter on models from 1996 to 2000, while on 2001 and later models, it is found in the exhaust manifold; the downstream HO2S is positioned behind the converter. The upstream HO2S monitors the oxygen content in the exhaust gas stream, producing a voltage output ranging from 100 millivolts for a lean mixture to 800 millivolts for a rich mixture, which the PCM uses to adjust the air/fuel mixture for optimal emissions. The HO2S must reach approximately 600 degrees F to function correctly, and during warm-up, the PCM operates in open loop mode. Proper operation of the oxygen sensor depends on clean electrical connections, adequate air supply, correct operating temperature, and the use of unleaded fuel. The downstream HO2S functions similarly but is used by the PCM to monitor catalytic converter efficiency. Caution is advised as the HO2S is sensitive to circuit loads; testing should be done with a digital voltmeter, and care should be taken to avoid damaging the sensor. Voltage readings from the upstream HO2S should fluctuate between 100 and 800 millivolts, while the downstream HO2S should remain stable. Battery voltage and ground circuits should be checked, and the oxygen sensor heater should be tested for an open circuit. If issues persist, the wiring harness and connectors should be inspected. For replacement, the exhaust pipe should be warmed to ease removal, and care should be taken to avoid damaging the HO2S or its connectors. Anti-seize compound should be applied to the threads before installation, and the sensor should be tightened to the specified torque before reconnecting the electrical connector and lowering the vehicle.