Parts for your 2009 Toyota Crown-Camshaft sensor

2009 Toyota Crown camshaft sensor — purpose, servicing and replacement

Technical confirmation: The 2009 Toyota Crown (S200 series – GRS200/201/204 and GWS204) with 4GR‑FSE, 3GR‑FSE, 2GR‑FSE or 2GR‑FXE engines is fitted with camshaft position sensors (one per bank). This is documented in the Toyota Crown Electrical Wiring Diagram for the SFI system (“Camshaft Position Sensor”), the Toyota Repair Manual for GRS200‑series engines, and the Toyota Electronic Parts Catalog, which lists “Sensor, Cam Position” for these engines. Related Toyota DTCs including P0340/P0345 and P0365/P0367 also confirm their presence and diagnostic pathway.

On a 2009 Toyota Crown, the camshaft sensor is a small but critical bit of kit. It tells the engine control module exactly where each camshaft sits, so the ECU can sync fuel injection, spark timing, and VVT‑i cam phasing. With accurate cam timing feedback, the Crown starts crisply, idles smoothly, and pulls cleanly through the revs while keeping fuel use and emissions in check.

When a cam sensor goes crook, the ECU can’t line up crank and cam signals properly. That can cause hard starting, stumbles, or a sudden lack of go as the system drops into a protective strategy. The check engine light usually chimes in with a code to suit.

• Common symptoms: long crank/no start, rough idle, flat spots, poor fuel economy, and intermittent stalling.
• Typical fault codes: P0340/P0345 (camshaft position circuit, bank 1/2) and P0365/P0367 (camshaft position sensor issues, bank 1/2).

There’s no routine replacement interval for the camshaft sensor on a Crown, it’s a “fit and forget” item until a fault shows up. As part of periodic servicing, it’s smart to eyeball the sensor plugs at each cylinder head, checking for brittle wiring, loose connectors, or oil wicking into the loom from a tired O‑ring. Keeping on top of rocker cover gasket leaks helps prevent oil soaking the connectors.

Replacement is straightforward: disconnect the battery, pull the engine cover, unplug the sensor, remove the single retaining bolt, and gently twist the sensor out. Lightly oil the new O‑ring before fitting, seat the sensor fully, and tighten the bolt to a typical Toyota small‑bolt spec (about 8–10 N·m, always confirm in the repair manual). Clear any codes, warm the engine, and check live data for clean cam/crank correlation. The Crown’s ECU generally doesn’t need a relearn for a new cam sensor, but verifying timing PIDs and a short road test is good practice.

Quality matters. Genuine or OEM‑equivalent (Denso) sensors tend to provide the most reliable signal and correct fit under the Crown’s bonnet across Kiwi and Aussie climates.

How many camshaft sensors and where are they located?
The 2009 Toyota Crown GR‑series V6 uses two camshaft position sensors, one per bank. Each sits at a cylinder head near the timing cover area. They’re accessible from above once the engine cover is off, though bank layout and access can vary slightly by engine variant.

What are common symptoms and fault codes?
Owners may notice long cranking, rough idle, hesitation, or a sudden drop in power. The check engine light often flags codes such as P0340/P0345 (camshaft position circuit faults) or P0365/P0367 (sensor signal issues), pointing to bank 1 or bank 2.

Does the ECU need a relearn after replacement?
Typically, no. After installing a new sensor, clearing codes and verifying cam/crank correlation in live data is enough. A short drive cycle helps the ECU confirm stable timing control, hybrid variants should also have codes cleared and systems checked as per the manual.