2127415 Scania KNOCK SENS

This little guy listens for engine knock – that's a pinging or rattling sound, almost like marbles inside the engine. It's a vibration sensor, really. It picks up those specific frequencies that indicate the fuel – air mixture is detonating instead of burning smoothly. It then sends a signal to the engine control unit, your car's computer. The computer uses that signal to adjust the ignition timing – when the spark plugs fire. Basically, it retards the timing a bit. Think of it like this: if the engine is starting to knock, the computer wants to slow things down a little to prevent damage. It's a crucial part of keeping everything running efficiently and preventing serious problems. It's a feedback system; the sensor tells the computer what’s happening, and the computer makes adjustments. It’s really important because uncontrolled engine knock can destroy an engine pretty quickly. It's like hitting your engine with a hammer repeatedly. The knock sensor acts like a shield, preventing that damage by telling the computer to adjust. If it fails, the engine could run lean and overheat, or experience significant internal wear. You’ll notice if a knock sensor goes bad usually through a check engine light, possibly accompanied by reduced power or poor fuel economy. Sometimes, you might actually hear the knocking sound itself, especially under load or acceleration. You can find these pretty easily online, places like Fixparts Online carry them, but it’s best to get it diagnosed properly first to make sure that is the issue. Reliable performance guaranteed: Knock Sensor (MPN 2127415) has a 12-month warranty!

About Scania

Scania provides innovative and sustainable transport solutions for commercial vehicles worldwide.

Why Choose Scania?

• Scania parts are built to last, keeping your vehicle on the road and reducing downtime. • We use high-quality materials and advanced technology, so you get reliable performance every time. • Genuine Scania parts maintain the value of your vehicle and ensure optimal fuel efficiency. • Our extensive network means you can easily find the parts you need, when you need them, with expert support. FixParts Online – Your Trusted Source for Quality Scania Auto Parts.