Parts for your 2025 Mitsubishi Asx-Throttle position sensors

Throttle Position Sensor for the 2025 Mitsubishi ASX

Technical sources indicate the 2025 Mitsubishi ASX uses a throttle position sensor (TPS) as part of its drive-by-wire system. Mitsubishi service literature for the ASX/RVR 4B-series MIVEC engines details an electronic throttle body with internal dual-track TPS, and the Mitsubishi ASA parts catalogue lists the throttle body assembly with an integrated throttle valve position sensor. For the Europe-sourced ASX variants based on Renault hardware, Renault Group workshop data likewise specifies a throttle valve position sensor and accelerator pedal position sensors working in tandem. So yes, a TPS is fitted and relevant on the 2025 Mitsubishi ASX.

On this ASX, the TPS tells the engine control module exactly how far the throttle plate is open. That signal helps the car decide fuelling, ignition timing, idle speed, transmission shift behaviour and even how the cruise control and stability systems respond. It’s a key player in keeping throttle response smooth and fuel use tidy around town and on the open road.

Most 2025 ASX variants use an electronic throttle body where the TPS is built in and monitored across two (sometimes three) tracks for redundancy. The accelerator pedal also has its own position sensors, the ECU constantly cross-checks the pedal and throttle body signals for safety. Because of this integrated design, TPS replacement often means replacing the throttle body assembly (or the pedal module, if the fault is on the pedal side). It’s worth checking by VIN which setup the vehicle has before ordering parts.

There’s no scheduled service for the TPS itself, but keeping the throttle body clean helps. If the butterfly gets gummed up, it can skew readings and cause a rough idle or a laggy feel under the right foot. Use a proper throttle-body-safe cleaner, avoid soaking the sealed sensor area, and fit a new gasket if the body is removed. After cleaning or replacement, a throttle/idle relearn with a scan tool is best practice, the ECU may also log correlation faults like P0120–P0124 or P2135 if things aren’t lined up.

Common signs it needs attention include a check engine light, hunting idle, flat spots off the lights, sudden limp-home behaviour or worse fuel economy. Before swapping parts, inspect the connector and loom under the bonnet for rub-through or moisture. If a new throttle body or pedal unit goes in, stick with quality OEM or equivalent, and carry out the relearn so the ASX behaves itself straight away.

• Typical fault clues: check engine light, unstable idle, hesitation, ASC/traction warnings
• Checks: scan for DTCs, inspect wiring/connectors, verify battery health and grounds
• After service: perform throttle/idle relearn with a capable scan tool

Popular questions about 2025 Mitsubishi ASX throttle position sensors

Where is the TPS on a 2025 Mitsubishi ASX?

It’s built into the electronic throttle body on the intake side under the bonnet. Many variants don’t allow the TPS to be replaced separately from the throttle body. The accelerator pedal also carries position sensors under the dash, the ECU compares both sources.

What are the signs the TPS is failing on a 2025 ASX?

Owners may notice a check engine light with codes like P0120–P0124 or P2135, erratic idle, flat spots when accelerating, higher fuel use, or the vehicle dropping into limp mode. Sometimes it’s wiring or a dirty throttle plate rather than the sensor itself, so diagnosis with a scan tool is smart.

Does the TPS need calibration after replacement or a battery disconnect?

Yes, after throttle body or pedal replacement—and often after thorough cleaning—a throttle/idle relearn is recommended. A professional scan tool procedure is the most reliable way to teach the ECU the correct closed and open positions so the ASX idles and responds properly.