Parts for your 2014 Mitsubishi Asx-Throttle position sensors

2014 Mitsubishi ASX Throttle Position Sensors (TPS)

Technical sources confirm that the 2014 Mitsubishi ASX does use throttle position sensors. The Mitsubishi Motors service manual for the GA/GAW platform (ASX/Outlander Sport) details an electronic throttle body that incorporates dual throttle position sensors, and associated DTCs such as P0120–P0124 and P2135. The Mitsubishi ASA/CAPS parts catalogue lists the throttle position sensing function as integrated within the throttle body assembly (not supplied separately). Trade data sets like Autodata/ALLDATA also show two TP signal tracks returning to the ECM. So, a TPS is absolutely relevant on the 2014 ASX.

On this model, the TPS tracks the angle of the throttle plate so the ECU can meter fuel, manage idle, and control torque smoothly. It’s part of the drive-by-wire system, paired with an accelerator pedal position (APP) sensor. The ECU compares both TPS tracks and the pedal signals to keep the ASX running crisply and to jump into failsafe if anything looks off.

Common clues a TPS/throttle body issue is brewing include erratic idle, flat spots on take-off, cruise control dropping out, the MIL on, or the car slipping into limp mode. Fault codes may include P0120, P0121, P0122, P0123, P0124 or correlation codes like P2135.

Maintenance-wise, the sensor isn’t a separate service item. It’s sealed into the throttle body, so technicians focus on keeping the throttle bore and plate clean and the connector/loom in top nick. During scheduled servicing (especially around 60,000–90,000 km, or sooner in dusty or coastal conditions), a careful throttle body clean with throttle-safe cleaner and a lint-free cloth helps avoid sticky plate issues that can be mistaken for a failing sensor. Don’t flood the motor housing with spray, and don’t force the butterfly by hand.

If diagnostics point to a failed sensor track or internal throttle body fault, the fix is to replace the complete throttle body assembly and its gasket. After fitting, a throttle/idle relearn or “ETC initialisation” is required—ideally with a scan tool—so the ECU knows the new plate positions. Under the bonnet, that means air duct off, electrical connector detached, coolant hoses (if fitted) managed, four fasteners out, swap the gasket, refit, and top up/bleed coolant if disturbed. Always check for relevant ECU software updates and inspect the APP sensor and grounds if TPS correlation codes persist.

• Key tip: poor earths, tired batteries, or corroded connectors can mimic TPS faults—test before replacing parts.

FAQs

Does the 2014 Mitsubishi ASX actually have a throttle position sensor?
Yes. The 2014 ASX uses an electronic throttle body with two built-in throttle position sensor tracks. The sensor isn’t sold separately, it’s part of the throttle body. There’s also an accelerator pedal position sensor on the pedal assembly.

What codes point to a bad TPS on a 2014 ASX?
Look for P0120–P0124 (TP circuit range/performance/low/high/intermittent) and correlation codes like P2135. Some vehicles may also log throttle actuator or idle control codes. Always check wiring and grounds before condemning the throttle body.

Can the TPS be cleaned or calibrated?
The TPS itself can’t be opened or repaired, but cleaning the throttle plate and bore can restore smooth operation if grime is the culprit. After replacement—or sometimes after a clean—perform a throttle/idle relearn with a scan tool so the ECU recalibrates the plate positions.