Parts for your 2014 Mitsubishi Lancer-Throttle position sensors

2014 Mitsubishi Lancer throttle position sensor (TPS)

Based on technical sources including the Mitsubishi Motors Lancer Service Manual (2008–2015, Group 13A Engine/Engine Control), MMNA TechInfo/ASA parts catalogue, and mainstream repair databases (Haynes, Autodata/Mitchell), the 2014 Mitsubishi Lancer uses electronic throttle control. The throttle body contains dual throttle position sensors (main and sub) built in, and the accelerator pedal carries a separate pedal position sensor. On most 2014 Lancer petrol variants (4B11/4B12 engines), the TPS is not sold as a separate piece, the throttle body assembly is replaced as a unit. So yes, a TPS is very much relevant and fitted to the vehicle.

The TPS tells the engine control module exactly how far the throttle plate is open, so fuelling and ignition can be adjusted on the fly. On this Lancer, two TPS tracks inside the throttle body provide redundancy and cross-check each other, helping the car maintain smooth idle, crisp throttle response and proper cruise control behaviour.

It’s not a scheduled replacement item, but it does deserve some love during regular servicing:

• Keep the throttle body clean. A gentle clean of the bore and plate with throttle-body safe cleaner every 40–60,000 km helps prevent sticky throttle and weird idle.
• Protect the wiring. Inspect the throttle body connector and loom for corrosion, oil wicking or chafing. Poor connections can mimic a failed sensor.
• Relearn after work. After cleaning or replacing the throttle body, perform an idle/throttle relearn with a scan tool. Some workshops use a key-on/idle procedure, but a scan tool is the tidy way to lock it in.

Signs the TPS/throttle body needs attention include erratic idle, flat spots, sudden limp-home, cruise dropping out, or the MIL with codes like P0121, P0122, P0123, or P2135. Because the sensor is integrated, confirmed TPS faults usually mean replacing the throttle body assembly with a new gasket, then carrying out the relearn. Don’t force the throttle plate by hand, and always torque fasteners to factory spec from service info.

For most Lancers, a quick inspection during routine servicing and the occasional clean keeps the throttle happy. If diagnostics show a mismatch between the TPS tracks or persistent range/performance faults, swapping the throttle body and calibrating it will get the car driving sweet again.

Does the 2014 Lancer have a separate, replaceable TPS?

No. Technical references show the TPS is built into the electronic throttle body as dual sensors. It isn’t typically sold separately, so the usual repair is to replace the throttle body assembly and then perform a throttle/idle relearn.

How is the TPS/throttle body relearned after replacement or cleaning?

Best practice is using a capable scan tool to run the throttle/idle learn routine once the engine is at operating temperature. Some techs use a key-on and idle period procedure, but the scan tool method is more reliable and quicker.

Can a dirty throttle body throw TPS codes?

It can. Carbon build-up can make the plate stick and cause readings that don’t match expected angles, leading to P0121–P0123 or P2135. A careful clean and a relearn often clears minor issues without parts replacement—provided wiring and voltages test fine.