How to remove and install the knock sensor on Hyundai Sonata?

For the four cylinder models and V6 models right from 1999 to 2005, the knock sensor will be found on the front side of the engine block. Therefore, start by removing the cable that connects with the negative terminal of the battery. On 2011 and later four-cylinder models the intake manifold must be disassembled uninterruptible air flow. Third, remove the knock sensor electrical connector and remove the knock sensor mounting bolt; and vice versa for installation. Starting from the 2006 model year V6 engine, the knock sensors are mounted in the valley and are barely visible; the intake manifold has to be removed to gain access to these sensors. It is advised to begin with the removal of the cable from the negative terminal of the battery as well as the removal of the upper and lower intake manifolds of the cable. Remove the electrical connector(s) from the knock sensor(s) and take off the wiring harness retainers from the block of the engine. Tighten or loosen any sensor mounting bolt(s) or disconnect the sensor(s), layout of a sensor is made in the reverse order of its removal.

Genuine Hyundai Sonata Knock Sensor

Engine Knock Sensor

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13 Knock Sensors found

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Hyundai Sonata Sensor Assembly-Knock
Part Number: 39250-2G100
$71.43 MSRP: $100.35
You Save: $28.92 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Knock Sensor
- Replaces: 39250-2G000
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2007-2019 Hyundai Sonata | DOHC - GDI, DOHC - MPI | Sedan - 4Door 5P
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Hyundai Sonata Sensor-Knock
Part Number: 39250-2G700
$69.91 MSRP: $98.23
You Save: $28.32 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Knock Sensor
- Replaces: 39250-2G200
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2009-2019 Hyundai Sonata | DOHC - TCI/GDI | Sedan - 4Door 5P
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Hyundai Sonata Sensor Assembly-Knock
Part Number: 39250-37150
$106.48 MSRP: $149.60
You Save: $43.12 (29%)
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Product Specifications
- Other Name: Knock Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 1998-2005 Hyundai Sonata | High Grade, Middle Grade | 4 Door, 4 Door Sedan
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Hyundai Sonata Sensor Assembly-Knock
Part Number: 39250-2B020
$101.86 MSRP: $143.11
You Save: $41.25 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Knock Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2015-2019 Hyundai Sonata | DOHC - TCI/GDI | Sedan - 4Door 5P
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Hyundai Sonata Sensor-Knock
Part Number: 39250-2M400
$38.79 MSRP: $54.03
You Save: $15.24 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Knock Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2020-2023 Hyundai Sonata | DOHC - TCI/GDI | Sedan - 4Door 5P
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Hyundai Sonata Sensor-Knock
Part Number: 39250-37100
$108.95 MSRP: $153.06
You Save: $44.11 (29%)
ADD TO CART
Product Specifications
- Other Name: Knock Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 1998-2005 Hyundai Sonata | High Grade, Middle Grade | 4 Door, 4 Door Sedan
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Hyundai Sonata Sensor Assembly-Knock
Part Number: 39250-2G000
$71.43 MSRP: $100.35
You Save: $28.92 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 39250-2G100
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2007-2010 Hyundai Sonata | DOHC - MPI | Sedan - 4Door 5P
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Hyundai Sonata Sensor-Knock
Part Number: 39510-38020
$126.56 MSRP: $177.81
You Save: $51.25 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 39510-38021
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 1998-2001 Hyundai Sonata | High Grade, Middle Grade | 4 Door
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Hyundai Sonata Sensor Assembly-Knock
Part Number: 39250-25200
$57.86 MSRP: $81.29
You Save: $23.43 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 39250-25300
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2005-2007 Hyundai Sonata | High Grade, Middle Grade | DOHC - MPI | 4 Door Sedan, Sedan - 4Door 5P
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Hyundai Sonata Sensor-Knock
Part Number: 39250-2S000
$87.24 MSRP: $122.56
You Save: $35.32 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Knock Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2020-2023 Hyundai Sonata | DOHC - GDI | Sedan - 4Door 5P
View related parts
Hyundai Sonata Sensor Assembly-Knock
Part Number: 39250-2S200
$94.58 MSRP: $132.89
You Save: $38.31 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Knock Sensor
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2020-2023 Hyundai Sonata | DOHC - TCI/GDI | Sedan - 4Door 5P
View related parts
Hyundai Sonata Sensor-Knock
Part Number: 39510-38021
$126.56 MSRP: $177.81
You Save: $51.25 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Knock Sensor
- Replaces: 39510-38020
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 1998-2005 Hyundai Sonata | High Grade, Middle Grade | 4 Door, 4 Door Sedan
View related parts
Hyundai Sonata Sensor-Knock,RH
Part Number: 39320-3C000
$116.98 MSRP: $164.35
You Save: $47.37 (29%)
Product Specifications
- Other Name: Knock Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Hyundai's factory warranty.
Fits the following Vehicles:
- 2005-2010 Hyundai Sonata | High Grade, Middle Grade | DOHC - MPI | 4 Door Sedan, Sedan - 4Door 5P

Hyundai Sonata Knock Sensor

Hyundai Sonata Knock Sensor is the watchful eye that protects the engine by identifying harmful spark knock and signaling to the computer to retard timing before damage occurs. Mounted on the block, this piezoelectric Knock Sensor converts vibration caused by detonation into an electrical signal so the PCM can compare pressure peaks with normal combustion and adjust the ignition advance instantly in tiny steps. Early Sonata models applied a single broadband Knock Sensor managing all cylinders at once, while recent Sonata engines have a smarter style, sometimes known as a per-cylinder Knock Sensor, with separate detection channels allowing timing corrections to be made on the cylinder that rattled, helping power and fuel economy. Regardless of version, the sensor creates a feedback loop, which slows down timing until knock ceases. Too much timing retards the ignition, then carefully advances timing again so that the engine is running right at its knock limit for maximum efficiency even with lower octane fuel. If a Knock Sensor is not working, the Hyundai control unit defaults to conservative timing and the Sonata feels sluggish, increasing fuel use. This added line gives Hyundai drivers the peace of mind of having reliable protection built into their Hyundai engines.

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

Hyundai Sonata Knock Sensor Parts Questions & Experts Answers

Sensor-Knock,RH
39320-3C000
Q: How to remove and install the knock sensor on Hyundai Sonata?
A:
For the four cylinder models and V6 models right from 1999 to 2005, the knock sensor will be found on the front side of the engine block. Therefore, start by removing the cable that connects with the negative terminal of the battery. On 2011 and later four-cylinder models the intake manifold must be disassembled uninterruptible air flow. Third, remove the knock sensor electrical connector and remove the knock sensor mounting bolt; and vice versa for installation. Starting from the 2006 model year V6 engine, the knock sensors are mounted in the valley and are barely visible; the intake manifold has to be removed to gain access to these sensors. It is advised to begin with the removal of the cable from the negative terminal of the battery as well as the removal of the upper and lower intake manifolds of the cable. Remove the electrical connector(s) from the knock sensor(s) and take off the wiring harness retainers from the block of the engine. Tighten or loosen any sensor mounting bolt(s) or disconnect the sensor(s), layout of a sensor is made in the reverse order of its removal.