Delphi Ignition Knock Sensor AS10017 — OE-Style Two-Wire Shielded, Piezo

The Delphi AS10017 is an OE‑engineered ignition knock sensor that senses combustion knock and sends precise signals to the engine control module to help optimize ignition timing and protect the engine.

Built from Delphi’s century of original equipment engineering, the AS10017 combines a self‑generating piezoelectric sensing element with a two‑wire shielded harness and ground isolation to deliver dependable knock detection across a wide range of operating conditions. It’s designed to integrate with modern engine control systems, offering consistent signal integrity and cross‑application versatility so technicians and DIYers can replace factory units without compromise.

How does the AS10017 detect engine knock and communicate with the ECU?

The sensor uses a piezoelectric element that converts vibration from detonation events into an electrical signal without requiring external power. Its flat frequency response and calibration across a broad spectrum enable it to recognize pre‑ignition and detonation signatures and pass those signals through a shielded two‑wire harness to the engine control module.

• Self‑generating piezoelectric element for immediate knock signal production.
• Two‑wire shielded harness reduces electromagnetic interference for clear signals.
• Ground‑isolated design maintains signal integrity under electrical noise.
• Calibrated frequency response to detect knock across varied RPM and loads.

Will this Delphi sensor fit my vehicle and replace the factory unit?

The AS10017 is engineered to OE standards and built for cross‑application compatibility, allowing the same basic design to be used in multiple engine layouts. Fitment depends on your specific make, model, engine code and mounting location — always verify part compatibility against your vehicle’s OEM part number or fitment guides before purchasing.

• OE‑style mounting and connector design for direct replacement in many applications.
• Flat frequency response allows use across varied engine families.
• Check vehicle fitment with VIN or OEM reference to ensure correct match.
• Delphi’s diagnostic training and documentation support professional installations.

What are the practical benefits of replacing a worn knock sensor with the AS10017?

Replacing a failing knock sensor restores the ECU’s ability to detect abnormal combustion events and adjust ignition timing accordingly, which helps maintain engine performance and reduce risk of sustained detonation. The AS10017’s reliable signal and interference protection mean fewer false readings and more accurate ECU responses under varied driving and fuel conditions.

• Improved knock detection accuracy compared with degraded or noisy sensors.
• Helps the ECU make consistent timing adjustments for smoother operation.
• Durable construction for long life in engine bay environments.
• Shielded wiring reduces error codes caused by electrical interference.

How should the AS10017 be installed and handled to ensure proper function?

Install the sensor in the factory location using the correct torque for the mounting fastener and ensure the connector and shielded harness are secured away from high‑heat sources. Avoid dropping or striking the piezo element; if the vehicle requires ECU relearn or adaptation after replacement, follow OEM calibration procedures.

• Tighten mount to OEM torque to ensure proper coupling to block vibrations.
• Route harness away from exhaust and ignition leads to minimize interference.
• Inspect connector and pins for corrosion; replace damaged clips or seals.
• Perform any required ECU adaptations or diagnostic resets after installation.

Who is this for: The Delphi AS10017 is aimed at professional technicians, independent repair shops and informed DIYers seeking an OE‑quality replacement knock sensor. It’s suitable for anyone who needs reliable detonation detection and clean knock signals to restore accurate ignition management in vehicles originally equipped with OE‑style sensors. Confirm fitment for your specific vehicle before ordering to ensure correct compatibility and function.