Parts for your 2014 Toyota Avensis-Throttle position sensors

2014 Toyota Avensis throttle position sensor (TPS)

Based on Toyota technical literature for the Avensis T27 series and typical diagnostic code sets (ETCS‑i system, DTCs such as P0120–P0124, P0220–P0223, P2135 listed in Toyota Repair Manual and EWD for 1ZR‑FAE/2ZR‑FAE petrol and 1AD/2AD diesel engines), the 2014 Toyota Avensis is fitted with throttle position sensing. On petrol Valvematic engines the TPS is built into the electronic throttle body, on the diesels a throttle valve unit with position feedback is used for EGR and smooth shutdown. So a TPS is relevant and used on this model.

On a 2014 Avensis, the throttle position sensor lives inside the throttle body alongside the throttle actuator motor. It tells the engine control module exactly where the throttle plate sits, so fuelling, ignition timing and idle control all stay on point. Even with Toyota’s Valvematic petrol engines doing most airflow control via valve lift, the throttle blade and its position feedback still matter for start‑up, limp‑home, cruise control and emissions checks. Diesels likewise rely on a throttle valve position signal to manage EGR flow and engine shutdown feel.

When it comes to servicing, the TPS itself isn’t a separate service item because it’s integrated into the throttle body. What helps is keeping the throttle bore clean and the connector healthy. During regular servicing (roughly every 20,000–30,000 kilometres or as the vehicle’s schedule dictates), a technician will:

• Inspect the throttle body for carbon build‑up and clean the bore and plate with the correct cleaner (avoiding soaking the sensor area).
• Check the harness and plug for corrosion, bent pins or loose fitment.
• Scan for fault codes like P012x/P022x/P2135 and view live data for smooth, linear throttle angle changes.

If faults persist, replacement generally means swapping the complete throttle body assembly and fitting a new gasket. After refit, an idle/ETCS relearn with a scan tool ensures stable idle and proper throttle tracking. It’s a straightforward job for a workshop and usually restores crisp throttle response.

Common signs the Avensis might want throttle attention include erratic idle, hesitant take‑off, sudden limp mode, poor fuel economy or an illuminated MIL. Those symptoms can overlap with pedal sensor faults, vacuum leaks or EGR issues, so proper diagnosis is key. Using genuine‑spec parts and keeping the intake clean goes a long way to keeping the Avensis happy on Aussie and Kiwi roads.

Popular questions about 2014 Toyota Avensis throttle position sensors

Does a 2014 Avensis actually have a TPS?

Yes. Toyota’s ETCS‑i system on this model uses an integrated throttle position sensor within the throttle body (and a throttle valve with position feedback on diesels). It’s essential for accurate throttle control and emissions management.

Can the TPS be replaced separately from the throttle body?

On most 2014 Avensis engines the TPS is part of the throttle body assembly, so replacement is done as a complete unit. After installation, a throttle/idle relearn with a scan tool is recommended.

What symptoms point to a TPS or throttle body issue?

Drivers may notice rough idle, delayed or surging acceleration, poor fuel economy, or the MIL coming on. A scan may show codes like P0120–P0124 or P2135. Always rule out pedal sensor, intake leaks and EGR concerns during diagnosis.