Parts for your 2025 Mitsubishi Eclipse cross-Throttle position sensors

2025 Mitsubishi Eclipse Cross throttle position sensor (TPS)

Based on Mitsubishi technical literature and parts data, the 2025 Mitsubishi Eclipse Cross does use a throttle position sensor. The Mitsubishi Motors service manual for the Eclipse Cross (GK/GN series, 4B40 petrol and 4B12/2.4 PHEV) details an electronic throttle control system with dual redundant throttle position sensors integrated into the throttle body, along with dual accelerator pedal position sensors. Mitsubishi’s ASA/parts catalogue lists the throttle body as an assembly with the TPS built in and typically not serviced separately. Standard OBD-II diagnostics for this platform include throttle/pedal position DTCs (e.g., P0121–P0123, P2135) per SAE J2012, confirming the system monitors throttle angle. So yes—the TPS is relevant and fitted to the 2025 Eclipse Cross.

On this model, the TPS tells the engine ECU exactly how far the throttle plate’s open, so it can trim fuel and ignition, manage turbo boost, stabilise idle, and coordinate with the transmission, cruise control and traction/ASC systems. Because it’s a drive-by-wire setup, the throttle body carries two position signals for safety, constantly cross-checked against the accelerator pedal sensors. If they don’t agree, the ECU can drop into limp-home to protect the driveline.

There’s no scheduled replacement interval for the TPS, and on the Eclipse Cross it’s generally part of the throttle body assembly. When owners report rough idle, hesitation off the line, surging, poor fuel economy, or a sudden loss of power with the MIL/ASC lamps lit, a scan often reveals TPS-related fault codes. Before condemning the throttle body, it pays to inspect the connector, wiring, battery and grounds, and make sure the air filter and intake aren’t filthy.

• Service tips: don’t force the throttle plate by hand, use proper throttle body cleaner if carbon is heavy, keep the harness clip secured and dry.
• After cleaning or replacement: perform an idle/throttle relearn using a capable scan tool (MUT-III or equivalent) or follow the prescribed warm-up/idle procedure so the ECU re-adapts the throttle angle.
• If the sensor fails: expect to replace the throttle body assembly and fit a new gasket, clear codes and complete the relearn. Genuine parts and correct torque on the mounting bolts help avoid air leaks.

For anyone doing lots of urban kilometres, a periodic throttle body inspection during routine servicing can prevent sticky throttle behaviour and nuisance fault codes down the track.

FAQs

Does the 2025 Eclipse Cross have a separate, replaceable TPS?
It has a throttle position sensor, but it’s integrated into the electronic throttle body. In most cases the sensor isn’t serviced on its own—technicians replace the throttle body assembly, then carry out a throttle/idle relearn with a scan tool.

What are common signs the TPS is playing up on an Eclipse Cross?
Owners might notice a hunting idle, flat spots on take-off, cruise control dropping out, or the vehicle going into reduced-power mode with the check engine and ASC lights on. A quick scan typically shows TPS or correlation codes, which should be investigated before parts are replaced.

Is calibration needed after cleaning or replacing the throttle body?
Yes. After any work that affects the throttle plate or its position data, the ECU needs to relearn the baseline angle. A workshop will use MUT-III or an equivalent scan tool, some conditions-based idle relearn procedures also work if followed exactly.