Delphi Ignition Knock Sensor AS10017 — 2‑Wire Shielded, Self‑Generating Piezoelectric

The Delphi AS10017 Ignition Knock Sensor detects engine knock and delivers precise signals to the engine control module to help optimize ignition timing and protect engine components.

Built on Delphi’s century of OE engineering, the AS10017 is a replacement knock (detonation) sensor designed for reliable operation across varied driving conditions. It uses a self-generating piezoelectric element and a shielded two-wire harness to maintain signal integrity, while its calibrated response range lets a single design serve multiple engine applications. This sensor aims to provide accurate knock detection so the engine management system can adjust ignition timing and maintain balanced combustion.

How does the AS10017 identify and report engine knock?

The sensor converts vibrations caused by pre-ignition or detonation into electrical signals using a piezoelectric element, requiring no external power. Its flat frequency response and calibration across a broad range of frequencies enable it to pick up knock events outside the primary operating band, allowing the engine control module to interpret and react to the signals.

• Self-generating piezoelectric sensing element—no external power needed.
• Calibrated frequency response to detect varied combustion events.
• 2-wire shielded harness reduces interference for clearer signals.

Will this sensor work across different engine types and fuels?

The AS10017 is engineered for versatility, with a design intended to perform consistently across multiple engine configurations and fuel types. Its flat response curve and robust calibration help maintain reliable detection whether the engine runs on standard gasoline blends or under different load conditions.

• OE-engineered flat frequency response for multi-application use.
• Calibrated to detect knock across a wide RPM and load range.
• Suitable for diverse fuel blends and real-world driving scenarios.

How does the sensor avoid false readings from electrical noise?

Delphi reduced electromagnetic interference (EMI) risk by integrating a ground-isolated housing and a shielded 2-wire harness. That construction helps preserve the fidelity of the knock signal even in electrically noisy engine compartments so the ECU receives useful data for timing adjustments.

• Ground-isolated design minimizes stray grounding errors.
• Shielded wiring helps block electromagnetic interference (EMI).
• Robust signal integrity supports dependable ECU decisions.

What diagnostic or installation considerations should I know?

Installation follows standard sensor replacement procedures, and Delphi supports OE-level diagnostics such as reset adaption and throttle actuator or EGR valve coding when applicable. Note that warranty terms differ by seller—Delphi’s standard limited warranty does not apply to units purchased through Amazon; check the seller’s warranty if bought there.

• Fits OE mounting and electrical interfaces for straightforward swap-in.
• Supports reset adaption and advanced diagnostic flows when needed.
• Warranty varies by retailer—review seller warranty details carefully.

Who is this for: The Delphi AS10017 is aimed at professional technicians and DIY mechanics seeking an OE-grade knock sensor replacement with durable construction and reliable signal performance. It’s well suited for vehicles requiring precise knock detection for ignition control, drivers wanting consistent engine management across fuels and loads, and shops that rely on parts engineered to OE specifications and diagnostics.