31491865 VOLVO Knock Sensor XC40

Review VOLVO Genuine Knock Sensor for XC40

The Volvo 31491865 Knock Sensor is an essential component of your Volvo vehicle's engine management system. Designed specifically for Volvo models, this knock sensor plays a crucial role in monitoring the engine for unusual sounds or vibrations, commonly referred to as engine knocking or detonation.

This sensor is a piezoelectric device, meaning it converts mechanical energy into electrical energy. It's located in the engine block and utilizes a thin, sensitive element to detect even the slightest mechanical vibrations. When it detects an unusual knocking sound, it sends an electrical signal to the engine control unit (ECU), alerting it to potential engine issues.

The Volvo 31491865 Knock Sensor is engineered with high-precision technology, ensuring accurate and reliable detection of engine knocking. It's designed to withstand the harsh conditions of the engine bay, including extreme temperatures and vibrations. The sensor features a robust housing and a secure connection to the engine, ensuring stable and consistent performance.

When the knock sensor fails, it can lead to serious engine damage, including piston and cylinder wall damage. Replacing a faulty knock sensor with a genuine Volvo part, like the 31491865, is essential for maintaining the overall health and longevity of your Volvo engine.

Installing the Volvo 31491865 Knock Sensor is a straightforward process, typically involving removing the old sensor, preparing the new sensor for installation, and securing the new sensor in place. However, for best results, we recommend having the sensor replaced by a certified Volvo technician.

In summary, the Volvo 31491865 Knock Sensor is a vital component of your Volvo's engine management system, responsible for detecting engine knocking and alerting the ECU to potential issues. Engineered for precision and durability, this sensor ensures accurate and reliable detection, protecting your engine from costly damage. When it's time for replacement, trust the expertise of a certified Volvo technician to install a genuine Volvo 31491865 Knock Sensor.

Buying a Volvo 31491865 knock sensor is an investment in maintaining the proper functioning of your Volvo vehicle's engine. A knock sensor is an essential component of the engine management system, monitoring for engine knocking or pinging caused by fuel detonation instead of the intended controlled combustion.

1. Improved Engine Performance: A faulty or malfunctioning knock sensor can lead to decreased engine performance and poor fuel economy. Replacing it ensures that your engine is running efficiently and effectively.

2. Prevents Engine Damage: The knock sensor plays a crucial role in protecting your engine from potential damage due to knocking or pinging. Timely replacement of the sensor can save you from costly engine repairs down the line.

3. Enhances Fuel Efficiency: A properly functioning knock sensor ensures optimal engine performance, which translates to improved fuel efficiency.

1. Cost: Replacing a knock sensor is an additional expense that comes with maintaining a vehicle. The price of the sensor itself can range from $30 to $100, but labor costs and other related expenses can add up.

2. Time Investment: Installing a new knock sensor involves removing the old one, which requires an adequate amount of time and effort. If you're not comfortable doing it yourself, you'll need to schedule an appointment with a mechanic.

3. Potential for False Positives: Modern engines are designed to run lean, which can sometimes cause the knock sensor to trigger false positives. This can result in unnecessary engine adjustments and increased fuel consumption.

A Volvo 31491865 knock sensor is an essential component of your vehicle's engine management system. While there are some cons associated with its replacement, such as cost and time investment, the benefits, including improved engine performance and protection against potential damage, outweigh the drawbacks. If you suspect that your engine is experiencing knocking or pinging, it's essential to address the issue promptly by replacing the faulty knock sensor.

Consider purchasing a Volvo 31491865 knock sensor from a reputable auto parts supplier or your dealership to ensure its authenticity and compatibility with your vehicle. If you're not confident in your ability to install the sensor yourself, we recommend scheduling an appointment with a certified mechanic to have the work done professionally. Regular maintenance, such as replacing the knock sensor when necessary, is crucial in ensuring the longevity and optimal performance of your Volvo vehicle.

Details:

Electrical parts are not returnable. Ignition knock detonation sensor. Shipping carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. V90 cross country.

Parts must be resalable and in the original packaging. Genuine Volvo parts.

specifications ignitioncomp:

• brand: Volvo
• mpn: 31491865
• model: S60 S90 V60 V60 V90 Xc40 Xc60 Xc90
• part type: Sensor
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• year: 2020 2021 2022 2023
• parts included: Only Part Reference 11 On The Diagram Is Included

seller ignitioncomp:

• rating: 97.6%
• # reviews: 2700
• city: cockeysville, maryland

offer ignitioncomp:

• in stock #: 5
• prices: $32.31–$52.93
• item condition:
  • New
  • Neu
• availability: in stock
• sold #: 8
• options: ship-to-home
• started: may 6, 2026

returns ignitioncomp:

• time: 30 days
• paid by: seller
• policy: returns accepted

shipping ignitioncomp:

• transit: 3-9 days
• service: fedex ground / fedex home delivery
• carrier: fedex
• class: standard
• type: fixed

payments ignitioncomp:

• credit card: mastercard
• wallet: google-pay
• other

general ignitioncomp:

• category: Auto Parts > Car Truck Accessories > Ignition Systems Components