Parts for your 2011 Mitsubishi Lancer-Throttle position sensors

2011 Mitsubishi Lancer throttle position sensors — what they do and how to look after them

Technical sources including the 2011 Mitsubishi Lancer factory service manual (Engine/Emission Control – MFI), the Mitsubishi ASA parts catalogue, and mainstream workshop databases (ALLDATA/Mitchell1) confirm the CJ-series 2011 Lancer uses an electronic throttle body with dual, built‑in throttle position sensors (TPS). There isn’t a separate bolt‑on TPS, the sensors are integrated into the throttle body assembly and work alongside the accelerator pedal’s dual position sensors. So yes, TPS is absolutely relevant on this model, but it’s serviced with the throttle body rather than as a standalone part.

On the 2011 Lancer’s drive‑by‑wire setup, the TPS pair tells the ECU exactly where the throttle plate is at any moment. That info lets the engine computer match air, fuel and ignition for smooth take‑offs, crisp overtakes and stable idle. The ECU constantly cross‑checks both TPS tracks (and the pedal sensors) for safety, if values don’t agree, it can log a fault and drop the car into limp mode to protect the engine. Typical related fault codes include P0121–P0123 and P0221–P0223.

Because the TPS is integrated, maintenance is more about prevention and correct diagnosis than tinkering with the sensor itself. Keeping the throttle bore clean and the electrical connectors healthy goes a long way. If the sensor tracks fail or go out of range, the cure is usually a new (or quality reman) throttle body assembly, followed by a throttle/idle relearn so the ECU knows the new unit’s exact closed and open positions.

• Common signs of TPS/throttle body issues:
  • Erratic idle, stalling or a lazy throttle feel
  • Check engine light with TPS/APP correlation codes
  • Limp mode, poor fuel economy or hunting idle
• Service tips for owners and workshops:
  • Inspect and clean the throttle body every 40,000–60,000 kilometres with sensor‑safe cleaner
  • Check the harness and connector for moisture, corrosion or pin tension issues
  • Perform a throttle/idle relearn after cleaning, battery disconnection or throttle body replacement (scan tool preferred)
  • Verify pedal sensor data and ECU updates if correlation faults persist

If a replacement’s on the cards, it’s wise to use a reputable throttle body and fresh gasket, reset adaptives, and road‑test while monitoring live data. Do that and the Lancer will feel keen and consistent under the right foot.

Popular questions about 2011 Mitsubishi Lancer throttle position sensors

Does the 2011 Lancer have a separate TPS I can replace?
Not on this model. The TPS is built into the electronic throttle body, with two sensor tracks inside the unit. If the sensor fails, the usual fix is replacing the entire throttle body assembly. The accelerator pedal has its own dual sensors as well, and the ECU compares all signals for accuracy.

Do I need a relearn after cleaning or replacing the throttle body?
Yes, a throttle/idle relearn is recommended after cleaning, battery disconnection or throttle body replacement. A scan tool procedure is the tidy way to do it, though some vehicles will relearn after a short drive/idle cycle. Skipping the relearn can leave the idle high, low or unstable.

What symptoms point to TPS trouble on a 2011 Lancer?
Look out for a check engine light with TPS or correlation codes, erratic idle, stalling, flat or delayed throttle response, and limp mode. Before condemning the throttle body, check for intake air leaks, dirty throttle plate, poor grounds, or a dodgy connector — they can mimic sensor faults.