Parts for your 2007 Toyota Aurion-Camshaft sensor

2007 Toyota Aurion Camshaft Sensor: what it does and when to service it

Yes, the 2007 Toyota Aurion absolutely uses camshaft position sensors. Technical references such as Toyota’s New Car Features (NCF) for the 2GR‑FE V6 and the Toyota Repair Manual (Engine – SFI system) specify two camshaft position sensors (one per bank) that the ECM uses to control sequential fuel injection and Dual VVT‑i timing. Toyota diagnostic coverage for the Aurion also lists DTCs like P0340/P0345 for camshaft position sensor circuits, confirming the part is fitted and monitored.

On the Aurion’s 3.5‑litre 2GR‑FE, the camshaft sensor keeps the engine in sync by reporting the exact cam angle so the ECM can fire injectors precisely and advance or retard valve timing on the fly. When it’s healthy, drivers get smooth starts, clean idle, solid fuel economy and strong mid‑range torque. When it’s unhappy, the check engine light tends to pop up and the car may crank longer than usual, feel doughy off the line or drop into a reduced‑power strategy.

There’s no scheduled replacement interval for the camshaft sensor, it’s generally “fit and forget” until fault codes or symptoms appear. As part of routine servicing, it’s smart to check for oil seepage at the sensor O‑ring, brittle wiring near the connector and any signs of water ingress. Good, clean engine oil also helps VVT‑i components behave, reducing false cam position correlation faults.

• Common signs it’s time to check the sensor: hard starting, rough idle, misfire under light throttle, poor fuel economy, and codes such as P0340/P0345/P0016–P0018.
• Basic replacement outline: disconnect the battery, unplug the sensor, remove the single retaining bolt, twist and withdraw the sensor, replace the O‑ring, lightly oil the new seal, refit, and clear codes with a scan tool.
• Use quality parts. Genuine or reputable aftermarket sensors tend to provide stable signals and longer life.

Access on the Aurion is typically from the top under the bonnet, with each sensor located on a cylinder head. One is on the radiator side (Bank 2) and the other on the firewall side (Bank 1). A technician will also check live data (cam/crank sync and VVT‑i angles) to confirm the sensor is the culprit before replacing it.

FAQs

Where is the camshaft sensor on a 2007 Toyota Aurion?
It’s mounted to the ends of the cylinder heads, one sensor per bank. On the transverse 2GR‑FE, you’ll typically find one toward the radiator side and the other toward the firewall side. Remove the engine cover for easier access under the bonnet.

Do both camshaft sensors need replacing at the same time?
Not necessarily. Diagnose by scanning for codes and checking live data. If only one bank shows a fault, replace that sensor first. On high‑kilometre cars where both are original, some owners choose to replace both as preventative maintenance.

Can a faulty camshaft sensor cause stalling or hard starts?
Yes. The ECM relies on the cam signal for precise fuel and spark timing. If the signal drops out, the engine may crank longer, stumble, or the ECM may default to backup strategies that reduce performance and economy.