Parts for your 2015 Mitsubishi Outlander-Throttle position sensors

2015 Mitsubishi Outlander Throttle Position Sensor (TPS)

Technical verdict: A throttle position sensor is used on the 2015 Mitsubishi Outlander. According to Mitsubishi Motors service documentation for the ZJ/ZK 2015 model year (Engine Controls, Electronic Throttle Control System), the throttle body contains dual throttle position sensors (main and sub) alongside a throttle control motor. The MUT-III data list and diagnostic routines reference TP Sensor Main/Sub and correlation checks, with relevant DTCs including P0121–P0123 and P0221–P0223. Mitsubishi’s parts catalogues for the same models show the TPS integrated into the throttle body assembly rather than as a separate, standalone sensor.

On this Outlander, the throttle position sensor’s job is to tell the engine computer exactly how far the throttle plate is open. It’s part of the electronic, drive-by-wire throttle body, so there’s no traditional cable. The ECM cross-checks the TPS signals with the accelerator pedal position sensors to manage airflow, fuel, ignition and idle speed, and to keep cruise control and traction systems behaving nicely. Mitsubishi builds in two TPS tracks (main and sub) for safety and accuracy, if they don’t agree, the car can drop into limp mode to protect the engine.

When the TPS inside the throttle body starts playing up, common signs include an illuminated check engine light, poor throttle response, surging, erratic idle, higher fuel use and, at times, limited power. Fault codes for “range/performance,” “high/low input,” or “correlation” are typical on scan tools. Because the TPS is integrated, the fix on most 2.0L, 2.4L and 3.0L variants is to replace the throttle body assembly rather than the sensor alone.

Good servicing practice for a 2015 Outlander includes checking live data for TP Main/Sub and their agreement, inspecting the throttle body connector and wiring for corrosion or strain, and cleaning the throttle bore if it’s gummy. Use a sensor-safe cleaner and never force the throttle plate by hand—it can damage the gears and the TPS tracks. If replacement is needed, fit a new gasket, torque the fasteners correctly, and carry out an idle/throttle relearn with a capable scan tool (MUT-III or equivalent). After that, clear codes and road test. In dusty or stop–start conditions, a light throttle body clean around every 60,000–80,000 kilometres helps keep the TPS readings stable and drivability smooth.

• Tell-tales: CEL on, limp mode, hesitation, unstable idle, poor economy.
• Service tips: Check data first, verify wiring, clean carefully, relearn after replacement.

Does a 2015 Mitsubishi Outlander have a separate throttle position sensor?
Not typically. For most engines fitted to the 2015 Outlander, the TPS is built into the electronic throttle body as dual tracks (main and sub). If the TPS fails, the usual repair is to replace the entire throttle body assembly and perform an idle/throttle relearn.

How can someone tell if the TPS is faulty versus the accelerator pedal sensor?
With a scan tool, compare APP1/APP2 (pedal) to TP Main/Sub (throttle). If the pedal signals sweep smoothly but one or both TP signals flatline, jump, or don’t track, the throttle body/TPS is the likely culprit. If both pedal and throttle data look off, check power, grounds and wiring before condemning parts.

Is the V6 (3.0L) any different for TPS issues?
The 6B31 V6 also uses an electronic throttle with integrated dual TPS. Diagnosis and repair steps are the same: confirm with data, inspect wiring, then replace the throttle body if the TPS is faulty and carry out the relearn. Parts pricing and labour time can vary slightly by engine and market.