Parts for your 2014 Lexus Is-Camshaft sensor

2014 Lexus IS camshaft sensor — fitment, purpose, and practical service tips

Yes, a camshaft position sensor is fitted to the 2014 Lexus IS range. Lexus technical sources including the 2014 IS Repair Manual and Electrical Wiring Diagram list camshaft position sensors for the IS 250/350 (4GR‑FSE and 2GR‑FSE V6) and IS 300h hybrid (2AR series). The engine control strategy in these manuals relies on camshaft signals for sequential fuel injection and Dual VVT‑i control, and diagnostic sections cite DTCs such as P0340/P0345/P0365 for camshaft sensor circuits. That makes the camshaft sensor absolutely relevant to this model.

This little sensor does a big job. It watches the cam’s position and tells the ECU exactly when each cylinder is on the intake or compression stroke. On the 2014 IS, that info is crucial for crisp starts, clean idle, accurate fuel injection, and on‑the‑money valve timing with Dual VVT‑i. If the signal goes flaky, the car can be hard to start, feel flat, or throw a Check Engine light with stability control warnings tagging along.

While it’s not a routine replacement item, it’s smart to keep an eye on it during servicing. The sensor itself is generally reliable, most dramas come from oil contamination at the connector, a weeping rocker cover gasket, or a chafed harness. A quick visual under the bonnet for oil around the plug, brittle wiring, or a loose retaining bolt can save a headache down the track. If the dash lights up with cam sensor codes (think P0340, P0345, P0349, P0365), rule out basics first: battery health, connector fit, and wiring integrity.

Replacement is straightforward for a home mechanic with a bit of patience:

• Disconnect the battery and give the area a clean to keep grit out.
• Unplug the connector, remove the retaining bolt, and ease the sensor out.
• Swap the O‑ring, lightly oil it, and seat the new sensor squarely before tightening to the spec in the Lexus manual.

No coding is usually needed, clear the fault codes, warm the engine, and let the ECU relearn. On V6 models there are sensors for each bank, so make sure Bank 1 vs Bank 2 is identified correctly before parts ordering. Using genuine or OE‑quality parts helps avoid intermittent gremlins, and if symptoms persist after replacement, check the crank sensor and timing signals with a scan tool.

Done right, the 2014 Lexus IS camshaft sensor should be a fit‑and‑forget job that restores smooth running and keeps fuel economy on point over the kilometres.

Popular questions

How many camshaft sensors does a 2014 Lexus IS have?
The V6 IS 250/350 typically uses one sensor per bank (two total). The IS 300h’s 2.5‑litre four‑cylinder uses a cam sensor as well. Exact count and locations are shown in the Lexus Repair Manual and EWD for each engine code, so it’s worth checking the engine label and manual before buying parts.

What are common symptoms of a failing camshaft sensor on this model?
Hard starting, rough idle, reduced power, and a Check Engine light are common. You may see codes like P0340/P0345/P0349/P0365. Sometimes it’s not the sensor itself but oil in the connector or a damaged harness, so inspect before replacing.

Do you need to reprogram the ECU after replacing the camshaft sensor?
Generally no. After fitting the sensor, clear the codes, start the engine, and let it reach operating temperature. The ECU will relearn. If codes return, recheck wiring, sensor seating, and related timing signals.