Walker 242-1331 Ignition Knock (Detonation) Sensor

OE Replacement Knock Sensor for Toyota and INFINITI

Walker 242-1331 is a Sensor Only ignition knock sensor built for OE replacement service. It monitors engine vibration and sends the signal the ECU uses to adjust ignition timing when detonation is detected. This helps maintain proper spark control in applications such as Toyota GR86, Toyota 86, Scion FR-S, and select INFINITI models.

Sensor Only Product Line

Walker’s Sensor Only line focuses on direct-fit replacement sensors that match factory electrical and performance requirements. Part number 242-1331 is engineered for the correct frequency range, sensitivity, and output needed for knock detection in the listed applications.

Key Features

• Ignition knock (detonation) sensor for engine vibration monitoring
• OE replacement design for factory-style fit and electrical connection
• Spade terminal type with 1 square connector
• 2 terminals, male connector gender, female terminal gender
• Built with heat- and oil-resistant materials for engine bay conditions
• Direct replacement for applications that use threaded sensor mounting locations

Detailed Description

Walker 242-1331 is designed to restore accurate knock detection so the engine control system can respond to spark knock in real time. By matching OE specifications for sensitivity and electrical output, this sensor supports precise ignition timing control in gasoline applications. It is a practical replacement for vehicles experiencing knock sensor fault codes or timing-related drivability concerns, including Toyota GR86, Toyota 86, and Scion FR-S applications.

This part cross-references no listed interchange numbers for the same application.

What It Helps Address

• Knock sensor fault codes such as P0325 or P0330
• Erratic ignition timing caused by inaccurate knock detection
• Spark knock or detonation-related drivability issues
• Reduced fuel economy from improper timing correction
• Engine protection concerns tied to failed sensor input

Installation Notes

Fits 2022-2026 Toyota GR86, N/A. Fits 2017-2020 Toyota 86, N/A. Fits 2013-2016 Scion FR-S, N/A. Fits 2014-2019 INFINITI Q70, N/A. Fits 2015-2019 INFINITI Q70L, N/A. Fits 2014 INFINITI QX70, N/A. Fits 2011-2013 INFINITI FX50, N/A. Fits 2011-2013 INFINITI M56, N/A.

Confirm the original connector style, threaded mounting location, and engine application before installation. Clean the mounting surface and follow the vehicle service procedure for torque and wiring routing. Walker 242-1331 is a sensor-only replacement and uses factory-style electrical terminals for direct connection.

Quality Assurance

Walker Products manufactures OE replacement sensors to match factory specifications for frequency response, sensitivity, and electrical output. Part number 242-1331 is built for dependable knock detection in the listed Toyota and INFINITI applications.