FAE Knock Sensor

FAE knock sensors, also called detonation sensors or knock (detonation) sensors, help your engine run smoothly and efficiently. The sensor mounts on the engine block. It picks up the vibration of abnormal combustion (engine knock) and turns it into an electrical signal for the engine control unit (ECU).

Key Features:

• Accurate, sensitive detection: FAE manufactures these sensors to be highly accurate and sensitive, so the ECU gets a reliable signal when knock occurs.
• Piezoelectric sensing element: A ceramic piezoelectric ring inside the sensor generates a voltage when it is subjected to vibration from the engine block.
• Helps protect the engine: The ECU compares the signal with its stored values. It can then adjust ignition timing and fuel injection before combustion reaches the knock limit.
• Built for engine conditions: The sensors are designed for a wide operating temperature range, from -40°C to 140°C.
• Replacement part: FAE sensors are intended to replace worn or failed original knock sensors.

A working knock sensor helps the engine run smoothly, keeps performance steady, and supports a longer engine service life. Symptoms of a failing knock sensor can include a check engine light, reduced power, and poor fuel economy. Select the specific part number for your application from the options on this page.