Parts for your 2007 Toyota Prius-Crank angle sensor

2007 Toyota Prius crank angle sensor (crankshaft position sensor)

Technical sources confirm the 2007 Toyota Prius (NHW20, 1NZ‑FXE) is fitted with a crank angle sensor, commonly called the crankshaft position (CKP) sensor. The Toyota Repair Manual (TIS) for 2004–2009 Prius documents diagnostics for DTC P0335 “Crankshaft Position Sensor ‘A’ Circuit,” and the Toyota Electronic Parts Catalogue lists a “Sensor, Crank Position” for this model. Independent workshop manuals and OBD references for NHW20 hybrids also describe synchronisation between the CKP and camshaft sensor for engine start/stop control. So, yes—this Prius absolutely uses a crank angle sensor.

On a 2007 Prius, the crank angle sensor tells the engine control module exactly where the crankshaft is and how fast it’s spinning. That info is essential for spark timing, injector timing, and—uniquely on a hybrid—allowing MG1 to spin the engine up seamlessly whenever the car decides to fire the petrol engine. Without a clean signal from this sensor, the Prius can be reluctant to start, run roughly, or drop into a fault mode.

It’s mounted on the engine block facing a toothed wheel on the crank. Over time, heat, oil contamination, or a knocked connector can upset the signal. While it’s not a scheduled service item, it’s smart to give it a look during bigger services or if chasing misfires and no-starts.

• Common clues it’s unhappy: hard starting when the engine tries to kick in, stumbling at low speeds, poor fuel economy, and a check engine light with codes like P0335–P0339.
• Quick checks: inspect the wiring and plug for oil soak, corrosion, or a loose fit, make sure there aren’t oil leaks dripping onto the sensor, and scan live data to verify an RPM signal while cranking.

If replacement’s on the cards, it’s a tidy little job for a competent tech. Park the car, make sure READY is off, keep the smart key away from the cabin, and disconnect the 12‑volt negative terminal. Avoid the orange high-voltage gear. With access from under the bonnet or underneath, the sensor is held by a single small bolt and sealed with an O‑ring. A light smear of clean engine oil on the new O‑ring helps it seat without tearing. Refit, tighten to the repair manual spec, reconnect the battery, clear codes, and confirm a stable RPM signal on a test drive.

Quality matters here—genuine or OE‑equivalent sensors tend to give the most reliable signal and longest life. Given the Prius’s start/stop nature, a healthy crank angle sensor keeps the whole hybrid system smooth, frugal, and drama‑free.

FAQs

Does a 2007 Prius actually have a crank angle sensor?
Yes. Toyota’s factory service information for the NHW20 Prius includes diagnostics for the crankshaft position sensor, and parts listings show a dedicated “Sensor, Crank Position.” It’s a core input for timing and hybrid start/stop control.

Where is the crank angle sensor on a 2007 Prius?
It’s mounted on the engine block, reading a toothed reluctor on the crankshaft. Access varies by tools and lift setup, many techs reach it from above near the front of the engine or from underneath with the splash shield removed.

What are the signs it needs replacing?
Hard starts when the engine tries to come online, rough running, intermittent stalling, or a check engine light—often with codes like P0335. Visual issues like oil‑soaked connectors or damaged wiring are also red flags.