Parts for your 2016 Lexus Is-Throttle position sensors

2016 Lexus IS throttle position sensor (TPS) – what it does and how to look after it

Based on Lexus/Toyota factory service literature for the 8AR‑FTS and 2GR‑FSE engines (ETCS‑i electronic throttle control) and the model’s OBD‑II diagnostics set (codes such as P0120–P0124/P0220–P0222), the 2016 Lexus IS is fitted with a throttle position sensor. It’s a dual‑track sensor built into the electronic throttle body, and it isn’t serviced separately from that assembly. So for anyone searching “2016‑lexus‑is/throttle-position-sensors”, yes—this car uses one, just not as a stand‑alone bolt‑on part.

On this IS, the TPS tells the engine control module exactly where the throttle blade sits, so fuelling, ignition timing, boost (on 8AR‑FTS), and idle control stay crisp and smooth. Paired with the accelerator pedal position sensor, it’s the brains of the drive‑by‑wire setup, delivering that clean tip‑in and steady cruise owners expect from a Lexus.

There’s no scheduled maintenance for the TPS itself, but a bit of care goes a long way. Keeping the air filter fresh and the intake sealed helps prevent grime from building up on the throttle blade, which can skew readings. If the throttle body needs cleaning, use a proper throttle‑body cleaner and don’t force the butterfly by hand—let the motor move it. Battery disconnects and throttle cleaning can trigger a relearn, a scan tool reset or a short adaptive drive cycle often sorts idle quality.

Typical hints the TPS/throttle body is unhappy include erratic idle, surging, poor response, limp‑home mode, and a lit MIL with TPS‑related DTCs. Because the TPS is integrated, replacement means swapping the throttle body assembly and its gasket, then performing the throttle/idle learn with a capable scan tool. A competent home spanner‑spinner can manage it, but most owners will prefer their trusted workshop to handle the job and verify data with live PIDs.

Good practice during servicing:

• Scan for codes and check live TPS and pedal correlation, both tracks should agree and sweep smoothly.
• Inspect the intake for leaks, unmetered air can mimic TPS faults.
• If replacing, use a quality throttle body, new gasket, correct torque, and complete the relearn.

Looked after, the TPS on a 2016 IS is a fit‑and‑forget piece that keeps the Lexus feeling sharp under the right foot.

Does the 2016 Lexus IS actually have a throttle-position-sensor?

It does. Lexus/Toyota’s ETCS‑i system on the 2016 IS uses a dual‑track TPS integrated into the throttle body. It works with the accelerator pedal sensor to manage throttle angle, fuelling, and idle. The sensor isn’t a separate bolt‑on item.

What are common signs the TPS/throttle body is playing up on a 2016 IS?

Owners may notice rough or high idle, poor throttle response, surging, or limp mode. The check engine light often pops up with codes like P0120–P0124 or P0220‑series. Live data that doesn’t sweep smoothly is another giveaway.

Can the TPS be replaced on its own?

No. On this model the TPS is built into the electronic throttle body. If the sensor fails, the fix is to replace the throttle body assembly, fit a new gasket, and carry out a throttle/idle relearn with a scan tool.