Parts for your 2016 Lexus Is-Camshaft sensor

2016 Lexus IS Camshaft Sensor: Purpose, Service Advice, and FAQs

Yes, the 2016 Lexus IS uses a camshaft position sensor (often called a CMP sensor). This is documented in Lexus/Toyota technical literature for the IS range, including the Lexus Repair Manual and Electrical Wiring Diagram for the GSE/ASE chassis. These manuals refer to the Camshaft Position Sensor (signals typically labelled G2/G22 in Toyota documentation) as a key input to the Engine Control Module. The official OBD-II diagnostic lists for these engines also include camshaft sensor-related DTCs such as P0340/P0345, confirming the sensor’s presence and monitoring. Lexus parts catalogues for IS 200t (8AR-FTS) and V6 variants (2GR-FSE) list a “Sensor, Camshaft Position” as fitted equipment. All told, factory sources make it clear this sensor is absolutely relevant on the 2016 Lexus IS.

What does it do? The camshaft sensor tracks the exact position and speed of the camshaft so the ECU can synchronise fuel injection, spark timing, and variable valve timing (VVT-i/VVT-iW). Without a crisp cam signal, the engine can struggle to start, run roughly, or default to a limp mode. On V6 IS models there’s a sensor per bank, while the 2.0-litre turbo uses a dedicated cam sensor arrangement matched to its VVT system. It’s a small part with big influence over driveability, performance, fuel economy, and emissions.

There’s no scheduled replacement interval, it’s a “fit-and-forget” item until symptoms or a fault code point to trouble. Good servicing habits help it live a long life: regular oil changes with the correct spec keep VVT hardware clean and reduce debris that can affect sensor readings, and careful inspection of connectors and wiring under the bonnet helps avoid intermittent faults from heat or vibration. If replacement is needed, use quality parts, renew the O-ring, and torque the retaining bolt to the spec in the Lexus manual. After installation, clear codes, check live data for a stable cam signal, and complete a short drive cycle—no special programming is typically required.

• Common signs: hard starting, stalling at idle, misfires, sluggish performance, poor fuel economy
• Warning lights: Check Engine lamp with codes like P0340–P0349
• Before replacing: verify wiring integrity, oil contamination, and correct timing
• During service: keep the connector clean and properly clipped, avoid pulling on the loom
• Safety: allow the engine to cool, disconnect the battery if working near live harnesses

Where is the camshaft sensor on a 2016 Lexus IS?

It’s mounted on the cylinder head near the camshaft sprocket area, typically under the plastic engine cover. V6 models have one sensor per bank, the 2.0-litre turbo has its sensor mounted at the front/top of the head. Access is usually straightforward once the engine cover is off.

What are the symptoms of a failing camshaft sensor on this model?

Owners often report hard starts, uneven idle, sudden loss of power, or poor economy. The Check Engine light may appear with cam-sensor codes. Because these symptoms overlap with wiring or timing issues, a proper scan and inspection is wise before fitting parts.

Does a new camshaft sensor need programming?

No special coding is normally required. After replacement, clearing fault codes and completing a short drive so the ECU can relearn is usually all that’s needed. Always follow the Lexus repair manual steps for best results.