Motorad 1KS1009 Ignition Knock (Detonation) Sensor

Ignition Knock Sensor for Subaru Applications

The Motorad 1KS1009 ignition knock sensor monitors engine knock frequencies and sends accurate signal data to the ECM for ignition timing control. It is built for Subaru Forester, Impreza, Legacy, and Outback applications from 1999 through 2002, with fitment matched to the listed model years.

Key Features

• Measures engine knock frequencies for ECM timing adjustments
• Piezoceramic sensing element manufactured to tight tolerances
• Built to meet or exceed OEM specifications
• Produced in ISO TS16949 manufacturing facilities
• Direct-fit replacement for listed Subaru applications

Detailed Description

Motorad 1KS1009 is an ignition knock sensor designed to provide the ECM with precise feedback so the engine can adjust ignition timing based on detected detonation. This helps maintain proper engine control on 1999-2002 Subaru Forester and Impreza models, as well as 1999-2001 Subaru Legacy and 2000-2001 Subaru Outback applications. This part cross-references 22060AA070 and 917031 for the same application.

Common Issues This Part May Address

• Knock sensor fault codes
• Audible pinging or detonation under load
• Erratic ignition timing control
• Reduced engine performance from inaccurate knock feedback
• Check engine light related to knock sensor circuit concerns

Installation Notes and Tips

Verify the connector style and engine application against the vehicle listing before installation. Inspect the mounting surface and wiring harness for damage, corrosion, or contamination that could affect sensor readings. Clear diagnostic trouble codes after installation and confirm proper ECM operation with a scan tool.

Quality Assurance

Motorad manufactures this knock sensor to meet or exceed OEM specifications using a tightly controlled piezoceramic element and ISO TS16949 production standards.