Parts for your 2015 Toyota Crown-Camshaft sensor

2015 Toyota Crown camshaft sensor — purpose, servicing and replacement

Based on Toyota technical references for the S210-series Crown — including the Toyota Repair Manual and Electrical Wiring Diagram for engines 8AR-FTS (2.0L turbo), 2AR-FSE (2.5L hybrid) and 2GR-FSE (3.5L V6) — the 2015 Toyota Crown is fitted with camshaft position sensors. These engines use Dual VVT-i/VVT-iW, which relies on dedicated cam sensors to report precise cam angle to the engine control module (ECM) for start-up sync, injection timing and valve timing control.

On this Crown, the camshaft sensor’s job is to tell the ECM exactly where the cam(s) are in their rotation. That live position data lets the ECM fire injectors at the right moment, manage spark timing and command the VVT actuators for smooth torque and clean emissions. If a sensor goes out of whack, the car may crank longer, run rough, drop into limp mode or light the MIL with codes like P0340/P0345.

While the cam sensor isn’t a scheduled replacement item, it’s smart to give it some love during routine servicing — especially on higher-kilometre Crowns.

• Visually check the sensor body and connector for oil intrusion, brittle wiring or loose pins.
• Make sure the O-ring isn’t seeping, a light film of clean engine oil on a new O-ring helps on refit.
• Keep oil changes on time, varnish and sludge can affect VVT operation and trigger cam correlation faults.
• If fault codes appear, confirm power/ground and signal with a proper diagnostic flow before replacing.

Replacement is usually straightforward: disconnect the battery, unplug the connector, remove the retaining bolt, twist the sensor gently to free the O-ring, then pull it out. Lube the new O-ring, seat the sensor squarely and torque the bolt to the factory spec shown in the Toyota manual. Clear codes and verify with a warm idle and short road test while monitoring cam/crank sync and VVT targets on a scan tool.

Engine layouts vary slightly: the 8AR-FTS typically has two sensors on the cylinder head ends, the 2AR-FSE hybrid has two as well, and the 2GR-FSE V6 uses one per cam (four total) at the front of each bank. Using a genuine or high-quality equivalent sensor keeps timing stability crisp and drivability right where it should be.

FAQs

Where is the camshaft sensor on a 2015 Toyota Crown?
The location depends on the engine. On the 8AR-FTS 2.0 turbo and 2AR-FSE hybrid, sensors are mounted on the cylinder head near the front or rear ends of the camshafts. On the 2GR-FSE V6, there’s one sensor per cam at the front of each bank. Access is generally from the top with engine covers removed.

What are common symptoms of a failing camshaft sensor?
Expect longer cranking, intermittent stalling, flat spots on acceleration, poor fuel economy and the MIL on. The ECM may store P0340/P0345-series faults. Always rule out wiring and oil contamination before condemning the sensor.

Should both camshaft sensors be replaced at the same time?
Not mandatory. Replace the faulty unit after proper testing. On high-kilometre vehicles or if connectors are brittle and both sensors show similar ageing, replacing them as a pair (or all four on the V6) can be sensible preventative maintenance.