This little guy measures the hydraulic pressure inside your transmission. It’s constantly sending a signal to the transmission control module – that’s the computer that runs your gearbox. It’s not just one fixed reading, it’s always updating, letting the computer know exactly what’s going on with the fluid pressure. Different sensors can measure different things – sometimes it’s line pressure, sometimes torque converter pressure, or even input shaft speed, but they all do the same core job: measure pressure and report it. Think of it as a vital messenger. The transmission uses hydraulic pressure to smoothly shift gears. The computer needs to know that pressure is correct to make those shifts happen at the right time. It’s a key part of how your transmission decides when to upshift or downshift, and how firmly it does so. It works alongside other sensors to give the computer a complete picture. If this sensor goes bad, your transmission won’t shift correctly. You might notice slipping gears, harsh shifts, or even the transmission getting stuck in one gear. It can also trigger a check engine light. It's a small part, but a really critical one. A faulty sensor can really mess with your driving experience, and if you ignore it for too long, you could end up causing bigger, more expensive damage to the transmission itself. You can find a replacement pretty easily, Fixparts Online has a good selection. It's usually a fairly straightforward repair, but definitely something you want to address as soon as you suspect a problem. You’ll notice if it's failing because the shifting will feel off, often pretty dramatically. Why settle for less? Pressure Sensor (MPN 02K311597) comes with a 12-month warranty!

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