Parts for your 2019 Toyota Land cruiser-Throttle position sensors

2019 Toyota Land Cruiser throttle position sensors

Based on Toyota technical documentation for the 200 Series (J200), the 2019 Toyota Land Cruiser is fitted with throttle position sensors. In Toyota’s repair manual and wiring diagrams (EWD) for both the 5.7L petrol 3UR‑FE and the 4.5L diesel 1VD‑FTV, the throttle body is an electronic “Throttle with Motor Body Assembly” that contains dual throttle position sensors (often labelled Throttle Position Sensor No.1 and No.2, signals VTA1/VTA2). Related diagnostic trouble codes (DTCs) such as P0120–P0124 and P2135 are documented for this system in Toyota’s service literature, confirming the presence and role of TPS on the 2019 Land Cruiser.

The throttle position sensors on a 2019 Land Cruiser do a quiet but crucial job. They constantly report the actual angle of the throttle plate to the engine ECU so it can balance airflow, fuel and timing. Because the vehicle is drive‑by‑wire, Toyota uses two sensors inside the throttle body for redundancy and accuracy. If their readings don’t line up, the ECU can drop the vehicle into limp mode to protect the engine and driveline—handy on a long haul from the city to the station.

There’s no scheduled replacement interval for the TPS on this model, and they’re generally not serviced separately from the throttle body. As part of regular servicing, it’s smart to keep the intake clean, use quality fuel, and ensure the air filter and PCV system are in good nick. A light clean of the throttle bore (engine off, battery disconnected) with appropriate throttle cleaner can help maintain smooth idle, but avoid flooding the electronics and never force the throttle plate open by hand.

Signs the TPS system needs attention include a hunting or high idle, hesitation on take‑off, poor economy, cruise control dropping out, or the check engine light with codes like P0120–P0124 or P2135. Before buying parts, a proper scan with live data is the go: check VTA1/VTA2 agreement, look for dead spots as the throttle is slowly actuated, and inspect connectors for corrosion or water ingress—especially if the vehicle sees creek crossings or outback dust.

If replacement is needed, the usual fix is a complete throttle body assembly. After fitment, a throttle/idle learn procedure with a scan tool may be required. It also pays to check the accelerator pedal position sensor and update the ECU calibration if Toyota has issued a strategy tweak. Done right, the Land Cruiser will be back to that silky, predictable throttle feel Kiwis and Aussies expect.

• Keep the intake system clean and sealed.
• Check wiring/connectors for damage after off‑road use.
• Use a scan tool to verify VTA1/VTA2 tracking before replacing parts.

FAQs

Does the 2019 Toyota Land Cruiser have a throttle position sensor?
Yes, it uses dual throttle position sensors integrated into the electronic throttle body. They provide redundant feedback so the ECU can precisely control airflow and torque under all driving conditions.

Can the TPS be cleaned or do you need to replace the whole throttle body?
The sensors are built into the throttle body and aren’t serviced separately. Gentle cleaning of the throttle bore can help drivability, but if the sensors fail correlation tests or set relevant fault codes, the fix is typically a complete throttle body replacement.

Is it safe to drive with a TPS fault?
Often the ECU will limit power and enter limp mode. It’s usually safe to nurse it home or to a workshop, but towing is wise if the vehicle struggles to maintain speed, stalls, or shows unstable throttle behaviour—especially if you’re a long way from town.