Code Definition

P2140 — Throttle/Pedal Position Sensor/Switch E/F Voltage Correlation

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P2140

P2140 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2140 is stored, the module has detected a correlation fault — two sensors that should track each other have diverged beyond tolerance; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2140 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

DTC P2140 indicates a voltage correlation fault between throttle or pedal position signals E and F. These paired signals come from the redundant elements in the accelerator pedal or throttle position sensor and must move proportionally so the control module can confirm the demand reading is trustworthy. The code sets when the voltage relationship between signal E and signal F drifts outside the calibrated ratio, meaning the two no longer change together as expected. Treated as a safety relevant correlation fault, it commonly forces a reduced power or failsafe mode with limited throttle respons...

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