This little guy basically listens for engine knocking or pinging. That’s an uncontrolled combustion happening inside the engine. It's an electrical component, so it creates a voltage signal. The engine’s computer uses that signal to figure out if things are running smoothly, or if there’s a problem with how the fuel is burning. Think of it as an early warning system. The engine control unit – the computer – constantly monitors what the knock sensor is telling it. If it detects knocking, the computer will actually adjust the ignition timing to try and prevent further damage. It’s part of a feedback loop, constantly working to keep everything running as it should. It works alongside other sensors, like the oxygen sensor, to give the computer the full picture. Knocking can seriously damage your engine over time. It’s like tiny little explosions going on inside that weren’t supposed to happen, and they can wear down pistons, connecting rods, and even the crankshaft. The knock sensor lets the computer step in and correct the issue before that damage happens. You’ll notice if it’s failing because your engine might start running rough, lose power, or the check engine light will come on. Sometimes it’s a subtle issue, but best to deal with it. You can often find a replacement for a pretty good price online – places like Fixparts Online have them in stock, and it’s a relatively straightforward repair for a mechanic. Ignoring it could lead to much bigger, and more expensive, problems down the road. Easy returns and support: Knock Sensor (MPN AS10190) comes with a 12-month warranty!

About Delphi

Delphi is a trusted American brand in automotive technology, offering advanced fuel and electronic systems. Based in the USA, Delphi remains at the forefront of innovation and performance.

Why Choose Delphi?

• Delphi parts are built to last, using quality materials so you can drive with confidence. • We offer a wide range of parts for many different vehicles – from everyday cars to trucks. • Delphi parts are tested rigorously to meet or exceed industry standards, giving you reliable performance. • You’ll get a great value with Delphi – quality parts don’t have to break the bank. Delphi – trusted quality, available at FixParts Online!