OEM Knock Sensor for 1999 - 2002 Nissan Maxima

The Knock Sensor is a vital component in the engine management system of a vehicle. It is designed to detect abnormal combustion, often referred to as engine "knocking" or "pinging." The knock sensor detects the vibrations caused by these irregular combustion events and sends signals to the engine control unit (ECU) to adjust the ignition timing for optimal performance and to prevent engine damage.

Here are some signs that the knock sensor may need to be replaced:

• Check engine light: If the knock sensor malfunctions or detects persistent knocking or pinging, it will trigger the check engine light to illuminate on the dashboard. A diagnostic scan can identify the specific fault codes related to the knock sensor.
• Decreased engine performance: A faulty knock sensor can cause the ECU to overly retard the ignition timing as a precaution, leading to reduced engine power, slower acceleration, or a decrease in fuel efficiency.
• Engine knocking or pinging: If the knock sensor fails to detect engine knocking or pinging accurately, the engine may experience audible knocking sounds or pinging noises during operation, particularly under load or during acceleration.
• Poor fuel economy: A malfunctioning knock sensor can result in incorrect fuel and air mixture adjustments, leading to decreased fuel efficiency and potentially increased emissions.
• Unresponsive or inconsistent engine behavior: In some cases, a faulty knock sensor can cause irregular engine behavior, such as rough idling, hesitation, or stalling.

Replace your insufficient Knock Sensor with this genuine Nissan replacement part.

Fits:

• 1999 - 2002 Nissan Maxima