Parts for your 2017 Mitsubishi Eclipse cross-Throttle position sensors

2017 Mitsubishi Eclipse Cross Throttle Position Sensors

Technical documentation confirms the 2017-build (MY18) Mitsubishi Eclipse Cross uses a throttle position sensor as part of its electronic throttle control. The Mitsubishi Motors service manual for Eclipse Cross (GG/GK) details a drive-by-wire throttle body with an internal throttle valve position sensor and a throttle actuator. Mitsubishi’s electronic parts catalogue shows the throttle body supplied as an assembly with the sensor integrated, and the model’s OBD-II fault matrix lists TPS-related codes (P0120–P0124, P2135) for diagnostics. So yes—this model is fitted with a throttle position sensor, and it’s central to engine management.

The throttle position sensor (TPS) on the 2017 Mitsubishi Eclipse Cross is there to tell the engine computer exactly how far the throttle blade is opened at any moment. Paired with the accelerator pedal position sensor, it lets the ECU match driver demand with precise air and fuel control. That’s why smooth take-offs, tidy gear changes, crisp turbo response, and stable idle all rely on a clean, accurate signal from the TPS. On the Eclipse Cross, the TPS is built into the throttle body and works with the throttle actuator motor—there’s no separate cable and no standalone sensor to bolt on.

When a TPS starts playing up, owners might notice a rough or hunting idle, hesitant acceleration, a flat spot under load, or the car dropping into limp mode. The check engine light usually joins the party, and scan tools will often pull codes like P0120–P0124 or P2135. Because the sensor is integrated, the fix is typically to replace the throttle body assembly rather than the sensor alone.

Servicing tips that actually help: keep the intake system tight—no split hoses, loose clamps, or oily sludge from a clogged PCV upsetting readings. If the throttle plate has light deposits, a careful clean with throttle-safe cleaner can restore smooth movement. Any time the throttle body is replaced or cleaned significantly, an idle/throttle relearn should be performed. A proper scan tool is the tidy way, but many workshops can also do a key-on, no-pedal procedure as specified in Mitsubishi service information.

Replacement is straightforward for a competent tech: disconnect the battery, relieve intake clamps, unplug the throttle connector, swap the unit with a new gasket, torque evenly, reconnect, then perform the relearn. Using OEM-quality parts and checking for software updates keeps the Eclipse Cross behaving as it should on Aussie and Kiwi roads.

• Common signs: erratic idle, hesitation, poor economy, limp mode, TPS fault codes.
• Best practice: replace throttle body as an assembly, perform ECU relearn afterwards.
• Preventative care: keep intake clean, fix vacuum leaks, maintain PCV system.

FAQ: Where is the throttle position sensor on a 2017 Eclipse Cross, and can it be replaced on its own?
The TPS is built into the electronic throttle body on the intake side of the engine, just downstream of the air intake hose. On this model it isn’t a separate bolt-on sensor—Mitsubishi supplies it as part of the throttle body assembly. If it fails or goes out of range, the correct repair is to replace the throttle body and then carry out a throttle/idle relearn with a scan tool.

FAQ: What fault codes point to a bad TPS on the Eclipse Cross?
Typical codes include P0120, P0121, P0122, P0123, P0124 and correlation codes like P2135. Drivers may also see throttle actuator or idle control-related codes. Any of these stored with symptoms such as surging, stalling, or limp mode is a good reason to test the throttle body and wiring, verify clean power/earth, and confirm the TPS signal ranges before replacement.

FAQ: Does the TPS need calibration or relearning after work?
Yes. After replacing the throttle body or doing significant cleaning, a throttle/idle relearn is required so the ECU can re-learn the closed and part-open positions. Most workshops use a scan tool to initiate the procedure, and it only takes a few minutes. Skipping this step can leave the idle high, low, or unstable.