How to replace the Knock Sensor on Toyota Prius?

The knock control system is intentionally planned to reduce spark knock during heavy detonating occasions which in turn enables the petrol engine to harness the finest spark advance with the intention of enhancing the driveability of the vehicle. Knock sensor measures vibration in the engine that is beyond normal and generates voltage signal that rise with increasing levels of knock. This voltage signal is observed by ECM which in turn blocks the ignition advance till the detonation is over. Knock sensor is mounted on the front of the engine block just below the cylinder head and oriented towards the forward part of the engine compartment, if viewed from the vehicle rear end side. The knock sensor is located above the oil pressure sensor and behind the intake manifold, to replace the knock sensor remove the intake manifold, disconnect the electrical connector and take out the sensor. Should one use the old sensor, the thread should be coated with thread sealant; in case the newly bought sensor, the coatings are probably pre-applied, do not apply another coating as it may hinder its functioning. Screw the knock sensor to the block until it is seize, then torque it up to 15 ft/lbs; do not over torque it since it can crack. The rest of the installation goes in the opposite sequence to the removal of these parts; then replenishes the cooling system and look for any signs of leakage.

Genuine Toyota Prius Knock Sensor

Engine Knock Sensor

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4 Knock Sensors found

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Toyota Prius Knock Control Sensor
Part Number: 89615-20090
$141.68 MSRP: $201.42
You Save: $59.74 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Knock Control
- Replaced by: 89615-06010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2024 Toyota Prius | E, G, L, S | 4 Cyl 1.5L, 4 Cyl 1.8L, 4 Cyl 2.0L | 1NZFXE, 2ZRFXE, M20AFXS; MXWH60L-AHXEBA, MXWH60L-AHXGBA, MXWH60L-AHXHBA, MXWH61L-AHXEBA, MXWH61L-AHXGBA, MXWH61L-AHXHBA, MXWH65L-AHXEBA, MXWH65L-AHXGBA, MXWH65L-AHXHBA, NHW20L-AHEEBA, NHW20L-AHEEBK, ZVW30L-AHXBBA, ZVW30L-AHXEBA, ZVW30L-AHXEBK, ZVW30L-AHXGBA, ZVW35L-BHXBBA, ZVW35L-BHXEBA, ZVW35L-BHXEBK, ZVW35L-BHXGBA, ZVW50L-AHXEBA, ZVW51L-AHXBBA, ZVW51L-AHXEBA, ZVW51L-AHXGBA, ZVW51L-AHXHBA, ZVW55L-AHXEBA, ZVW55L-AHXGBA
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Toyota Prius Knock Control Sensor
Part Number: 89615-52010
$151.74 MSRP: $215.72
You Save: $63.98 (30%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control; Knock Sensor
- Manufacturer Note: MATSUSHITA
- Replaces: 89615-12030, 89615-22050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001 Toyota Prius | 4 Cyl 1.5L | 1NZFXE; NHW11L-AEEEBA, NHW11L-AEEEBK
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Toyota Prius Knock Control Sensor
Part Number: 89615-52030
$144.13 MSRP: $204.91
You Save: $60.78 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control; Knock Sensor
- Manufacturer Note: DENSO
- Replaces: 89615-52040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2003 Toyota Prius | 4 Cyl 1.5L | 1NZFXE; NHW11L-AEEEBA, NHW11L-AEEEBK
View related parts
Toyota Prius Knock Control Sensor
Part Number: 89615-52040
$144.13 MSRP: $204.91
You Save: $60.78 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control
- Manufacturer Note: TOYOTA
- Replaced by: 89615-52030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2003 Toyota Prius | 4 Cyl 1.5L | 1NZFXE; NHW11L-AEEEBA, NHW11L-AEEEBK

Toyota Prius Knock Sensor

The Knock Sensor of a Toyota Prius monitors the vibration of the engine and sends a signal to the engine control computer whenever there is combustion knock. The Knock Sensor, which is attached to the engine block, utilizes a piezoelectric component that converts pressure pulses from abnormal detonation into electrical signals. The signals order the computer to delay ignition timing, which reduces pressure and prevents damage. When normal combustion is achieved, timing is advanced gradually so engine operation can occur closer to its optimum efficiency limit. The Prius' Knock Sensor receives information in real time so the hybrid's powertrain can continue to perform economically and with low emissions if the octane level or conditions change. In minor increments, the adaptive loop can also change timing when required, as well as modify adjustments for individual cylinders to avoid knock. Under many driving conditions, the Toyota engine management system uses the Knock Sensor to adjust and fine-tune spark, allowing the Prius powerplant to run on regular gasoline. If the Knock Sensor fails, the Prius computer can't precisely control timing, which may cause performance loss and increased emissions from the Toyota engine.

If you are in demand for superior quality and affordable OEM Toyota Prius Knock Sensor, then shop with us! We own a wide range of the reduced-priced genuine Toyota Prius Knock Sensor. You can purchase in confidence as all parts come with a manufacturer's warranty. Any issues with our products? No need to worry as we have a hassle-free return policy to guide you every step of the way.

Toyota Prius Knock Sensor Parts Questions & Experts Answers

Knock Control Sensor
89615-20090
Q: How to replace the Knock Sensor on Toyota Prius?
A:
The knock control system is intentionally planned to reduce spark knock during heavy detonating occasions which in turn enables the petrol engine to harness the finest spark advance with the intention of enhancing the driveability of the vehicle. Knock sensor measures vibration in the engine that is beyond normal and generates voltage signal that rise with increasing levels of knock. This voltage signal is observed by ECM which in turn blocks the ignition advance till the detonation is over. Knock sensor is mounted on the front of the engine block just below the cylinder head and oriented towards the forward part of the engine compartment, if viewed from the vehicle rear end side. The knock sensor is located above the oil pressure sensor and behind the intake manifold, to replace the knock sensor remove the intake manifold, disconnect the electrical connector and take out the sensor. Should one use the old sensor, the thread should be coated with thread sealant; in case the newly bought sensor, the coatings are probably pre-applied, do not apply another coating as it may hinder its functioning. Screw the knock sensor to the block until it is seize, then torque it up to 15 ft/lbs; do not over torque it since it can crack. The rest of the installation goes in the opposite sequence to the removal of these parts; then replenishes the cooling system and look for any signs of leakage.