Parts for your 2016 Toyota Rav4-Throttle position sensors

2016 Toyota RAV4 throttle position sensor (TPS)

Technical sources confirm the 2016 Toyota RAV4 uses a throttle position sensor. Toyota’s Repair Manual for the 2016 RAV4 (Engine/Hybrid System – ETCS-i for 2AR-FE and 2AR-FXE) and the Toyota Electrical Wiring Diagram state the TPS is built into the throttle body with motor assembly and is not serviced separately, related DTCs such as P0120–P0124, P0220–P0223 and P2135 in Toyota’s diagnostics cover this sensor. There’s also a separate accelerator pedal position (APP) sensor on the pedal, but the TPS on the throttle body is very much part of the system.

The TPS on a 2016 RAV4 tells the engine ECU exactly how far the throttle plate is open. Because this model runs Toyota’s drive‑by‑wire ETCS‑i, the ECU uses TPS feedback—along with the pedal sensor—to control throttle motor movement, fuel delivery, ignition timing, idle speed and even transmission shift scheduling. It’s a dual‑track design for redundancy and safety, helping traction and cruise control behave properly. When the ECU sees TPS values that don’t stack up, it can drop the car into limp mode to protect things.

There’s no routine replacement interval for the TPS on this RAV4 because it’s integrated into the throttle body. If it acts up, the fix is to replace the complete throttle body assembly. Typical signs include a surging or unstable idle, flat or hesitant acceleration, poor fuel economy, the MIL on, and limp‑home behaviour. A scan will usually reveal codes like P0121 or P2135, and live data will show mismatches between the pedal and throttle angles.

Keen owners and workshops can keep the system happy with simple care:

• Clean the throttle bore periodically with throttle‑body safe cleaner—avoid drowning the shaft area to protect the internal sensor.
• Don’t lever the plate open aggressively, with ignition off, gentle hand opening is fine.
• After cleaning or replacing the throttle body, perform an idle/throttle learning procedure. With Toyota Techstream, run the throttle air‑volume learn or reset memory. Without a scan tool, a warm‑up idle period and a short drive cycle often lets the ECU relearn.
• If replacement’s needed, disconnect the battery, remove the intake ducting, unplug the connector, and swap the throttle body using new gasket/O‑ring. Refill/bleed coolant if your variant routes coolant through the body. Torque to factory spec and carry out the learn routine.

Done right, the RAV4’s TPS is a fit‑and‑forget piece, but solid diagnostics and careful cleaning go a long way to keeping it drama‑free.

Popular questions

Does the 2016 RAV4 have both a TPS and a pedal sensor?
Yes. It runs an accelerator pedal position (APP) sensor on the pedal and a separate throttle position sensor built into the throttle body. The ECU cross‑checks both for accuracy and safety, which is why mismatch codes (like P2135) can pop up if one goes out of range.

Do you have to replace the whole throttle body if the TPS fails?
On this model, yes. Toyota integrates the TPS inside the throttle body, so there’s no stand‑alone TPS to bolt on. Diagnosis first, though—rule out wiring, connectors and carbon build‑up before committing to replacement.

Is a relearn needed after cleaning or replacing the throttle body?
It’s best practice. With a scan tool, run the throttle/idle learn procedure. Without one, a proper warm‑up idle and a short, mixed drive usually allows the ECU to relearn airflow and settle the idle within a few kilometres.