Parts for your 2014 Toyota Prius-Crank angle sensor

2014 Toyota Prius crank-angle sensor (crankshaft position sensor)

Yes, the 2014 Toyota Prius absolutely uses a crank‑angle sensor—Toyota usually calls it the crankshaft position sensor (CKP). Technical references including Toyota’s service information (TIS) and the Electrical Wiring Diagram (EWD) for the ZVW30 Prius with the 2ZR‑FXE engine show the CKP sensor providing the NE signal to the engine control module (ECM). The factory diagnostic section also lists related fault codes P0335 and P0339, confirming the part is fitted and monitored by the ECM.

On this hybrid, the CKP’s job is crucial. It reports the exact crank angle and engine speed so the ECM can time fuel injection and ignition, coordinate variable valve timing with the cam sensor, and manage smooth engine starts and stops with the hybrid system. Without a clean CKP signal, the engine may not fire, can stall, or will throw the check engine light—hybrid or not, the engine still needs this timing reference.

It’s not a scheduled maintenance item, but it’s worth a look during servicing. Check the harness routing and connector for damage, moisture, or corrosion, and keep an eye out for oil leaks that can contaminate the sensor’s O‑ring area. Symptoms of trouble include extended cranking where the engine gets spun by the hybrid motor but doesn’t start, intermittent stalling at idle, rough running, poor fuel economy, and the MIL on with P0335/P0339 stored.

Replacement on a 2014 Prius is typically straightforward. The sensor is mounted in the engine block with a single retaining bolt and a sealing O‑ring. General tips:

• Make the car safe: ignition OFF, disconnect the 12‑volt negative terminal, and wait a few minutes.
• Unplug the connector, remove the bolt, and gently twist‑pull the sensor out.
• Lightly oil the new O‑ring, seat the sensor squarely, and tighten the bolt to the workshop manual’s spec.
• Reconnect the battery, clear codes, and confirm proper operation in READY. No special relearn is usually required on Toyota for CKP.

Choosing a quality, OEM‑equivalent sensor helps avoid intermittent faults. If the MIL returns, check wiring continuity to the ECM and inspect for metal debris on the sensor tip. For high‑kilometre vehicles, addressing minor oil seepage near the sensor boss will help the new O‑ring last.

Popular questions

Does a 2014 Prius really have a crank‑angle sensor?
Yes. Toyota documentation for the ZVW30 with the 2ZR‑FXE engine lists a crankshaft position sensor providing the NE signal to the ECM, with diagnostics for P0335/P0339. It’s essential for ignition and injection timing and for the hybrid system to start the engine smoothly.

What are the signs the CKP is failing on a 2014 Prius?
Common signs include the engine being spun by the hybrid system but not firing, random stalling at lights, rough idle, and the check engine light. Scan tools often show P0335 or P0339. Issues may be intermittent when hot, and fuel economy can take a hit.

Is CKP replacement a regular service item, and how long does it take?
It’s not on the routine schedule, replace it only if it’s faulty. Most workshops can sort it in around an hour. Use an OEM‑quality sensor, fit a fresh O‑ring, and verify no wiring damage. After installation, clear codes and confirm clean engine starts in READY.