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. Professional-grade support: Knock Sensor (MPN 0261231188) comes with a 12-month warranty!

About Bosch

With a heritage of innovation, Bosch provides dependable and efficient automotive components that set industry standards.

Why Choose Bosch?

• Bosch parts are known for lasting a long time, so you won’t have to replace them often. • They perform reliably, helping to keep your vehicle running smoothly and safely. • Bosch invests a lot in research and development, meaning you’re getting the latest technology. • Mechanics trust Bosch, and that’s a good sign of quality and performance you can depend on. FixParts Online – Your Trusted Source for Quality Bosch Auto Parts.