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Parts for your 2008 Toyota Crown-Camshaft sensor
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2008 Toyota Crown camshaft sensor — what it does and how to look after it
Yes, the 2008 Toyota Crown uses camshaft position sensors. Technical sources including Toyota’s Technical Information System (TIS) for the Crown GRS200 series, the Engine Control and Electronic Wiring Diagram sections, and the 2GR‑FSE/3GR‑FSE/4GR‑FSE engine repair manuals confirm two camshaft position sensors (one per bank), commonly labelled G2 and G2A. These sensors are essential for sequential fuel injection, ignition timing, and the Dual VVT‑i system used on the Crown’s GR-series V6 engines. Denso’s application notes for Toyota camshaft sensors also align with this setup.
On a 2008 Toyota Crown, the camshaft sensor keeps the engine control module in the loop about exactly where each cam is in its rotation. That live timing info lets the ECU sync spark and fuel precisely and command VVT‑i to adjust valve timing for smooth idle, decent punch, and tidy fuel economy. It also helps with fast starts and accurate misfire detection. Because the Crown’s V6 is DOHC with variable timing on both banks, it runs a sensor on each cylinder head.
There’s no scheduled replacement interval for these sensors, but they do appreciate a bit of care during regular servicing. Under the bonnet, they sit at the ends of the cylinder heads by the timing chain covers. If oil sweat, road grime, or a dodgy connector shows up, it’s worth a closer look.
- Common symptoms when a sensor is crook: hard starting, rough idle, flat spots, stalling, higher fuel use, and a check engine light. Codes often include P0340–P0349 ranges.
- Quick checks: inspect the harness for rub-through near the back of the heads, make sure connectors are clean and pinned firmly, and confirm good battery voltage and grounds.
Replacement is a straightforward driveway job for a handy owner with basic spanners:
- Disconnect the battery, pop off the engine cover, and unplug the sensor.
- Remove the single retaining bolt, ease the sensor out, and mind the O‑ring.
- Lightly oil the new O‑ring, seat the sensor squarely, and tighten the bolt to the workshop spec from Toyota TIS.
- Reconnect, clear any fault codes, and road test.
Genuine or high‑quality aftermarket (Denso) sensors are recommended, as signal quality matters for the Crown’s Dual VVT‑i logic. If a light keeps coming back after replacement, don’t overlook timing chain stretch, VVT‑i oil control valve issues, or wiring resistance. A quick scan tool live‑data check for cam/crank sync under cranking can save head‑scratching.
Popular questions
Where is the camshaft sensor on a 2008 Toyota Crown?
It’s mounted on each cylinder head near the timing chain cover—one for Bank 1 and one for Bank 2. From the top, remove the plastic engine cover and look down near the rear or front edge of the head (varies slightly by GR engine variant). You’ll see a small sensor with a single bolt and a two‑pin or three‑pin plug.
What fault codes point to a bad camshaft sensor on a Crown?
Typical codes include P0340, P0341, P0342, P0343, P0344 and the Bank 2 equivalents (P0345–P0349). Before swapping parts, confirm power, ground, and signal integrity at the connector, and check for oil contamination in the plug. A weak crank sensor or timing issues can also mimic cam sensor faults.
Is it safe to drive with a failing camshaft sensor?
It may run but can be hard to start, lack power, and use more fuel. Prolonged driving isn’t ideal, as mis-timed events can stress the engine and catalyst. Best to diagnose and repair promptly to keep the Crown running sweet.
