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DTC codes / P21xx · Fuel and air metering / P2117

P2117Throttle/Pedal Position Sensor 'F' Minimum Stop Performance

P2117 indicates that the powertrain control module (PCM) has detected a performance problem with the minimum stop position of throttle/pedal position sensor 'F', which is typically part of the accelerator pedal assembly or the electronic throttle body. The PCM expects a specific signal voltage or range when the throttle is fully released, and the sensor's output does not meet that expectation during the self-test or during closed-throttle operation.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaFuel and air metering

Symptoms you may notice

  • The malfunction indicator lamp (MIL) illuminates, often with no other noticeable symptoms.
  • The engine may idle higher than normal or fluctuate at idle.
  • The accelerator pedal may feel unresponsive or require more effort to accelerate.
  • The vehicle may enter limp-home mode, limiting engine speed and power.
  • Cruise control may be disabled or fail to engage.
  • In some cases, the engine may stall when coming to a stop.

Common causes, most likely first

  1. A dirty or carbon-fouled throttle body preventing the throttle plate from reaching its expected minimum stop.
  2. A faulty accelerator pedal position sensor 'F' or a worn pedal assembly.
  3. Damaged, corroded, or loose wiring and connectors at the throttle body or pedal sensor.
  4. A misadjusted or binding throttle cable or linkage (on vehicles with a cable-actuated throttle).
  5. A failing electronic throttle body motor or internal sensor.
  6. A PCM software issue or internal fault in the throttle control circuit.
  7. An intake air leak or vacuum leak that alters the expected throttle position at idle.

How to diagnose and fix it

  1. Connect a scan tool and record the freeze-frame data and live throttle position sensor voltages to confirm the fault.
  2. Visually inspect the throttle body and pedal assembly for carbon buildup, mechanical binding, or physical damage.
  3. Clean the throttle body with approved cleaner and perform a throttle relearn or idle relearn procedure.
  4. Check the wiring harness and connectors at the throttle body and accelerator pedal for corrosion, chafing, or loose pins.
  5. Measure the sensor reference voltage and signal voltage with a multimeter and compare to manufacturer specifications.
  6. If the sensor or throttle body is faulty, replace the affected component and perform the required calibration or programming.
  7. Clear the diagnostic trouble codes (DTCs) and verify the repair with a road test and live data monitoring.

Before you replace the throttle body

  • A dirty throttle body is a very common cause of P2117 on vehicles with electronic throttle control, and cleaning it often resolves the code without parts replacement.
  • The code can be set by a weak battery or low charging system voltage that disrupts the throttle position sensor's reference signal during the minimum stop self-test.
  • On some vehicles, P2117 is stored after a throttle body cleaning or replacement if the PCM has not been recalibrated or the throttle relearn procedure was not completed.
  • A sticking or misadjusted accelerator pedal can mimic a sensor failure, so always check for mechanical binding before condemning the sensor.
  • P2117 may be accompanied by other throttle-related codes such as P2135 or P0121, which can help pinpoint whether the issue is in the pedal or the throttle body.

Can I keep driving with P2117?

If the vehicle is in limp-home mode or idles erratically, avoid highway driving and have it diagnosed promptly. If the only symptom is the warning light and the car drives normally, you can drive cautiously to a repair shop, but do not ignore the code because it can worsen and cause a sudden loss of power.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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