The P2140: Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation refers to an issue where the voltage signals from throttle/pedal position sensors ‘E’ and ‘F’ do not match as expected. This could be due to faulty sensors, wiring problems, or calibration issues, potentially affecting throttle control and vehicle performance.
P2140 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2140: Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation |
| Is it serious? | Yes, it can lead to throttle control issues and drivability problems. |
| Possible causes | – Voltage correlation issues between throttle/pedal position sensors ‘E’ and ‘F’ – Faulty sensors or wiring – Sensor calibration issues |
| How to diagnose? | – Compare voltage readings between sensors ‘E’ and ‘F’ – Test both sensors and check for faults – Inspect wiring and connections |
P2140 Meaning
The P2140 code indicates a voltage correlation problem between throttle/pedal position sensors ‘E’ and ‘F’. These sensors are responsible for monitoring throttle and pedal positions and sending signals to the engine control module (ECM). If the voltage signals from the two sensors do not match within the expected range, it can cause issues with throttle response, leading to poor acceleration and drivability.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional codes that may provide further insight into the issue. | OBD-II Scanner |
| Compare Voltage Readings | Use a multimeter or diagnostic tool to measure and compare the voltage outputs from throttle/pedal position sensors ‘E’ and ‘F’. Verify that the voltages correlate properly within the manufacturer’s specifications. | Multimeter, Diagnostic Tool |
| Test Sensors for Faults | Use a diagnostic tool to perform a detailed test of both sensors ‘E’ and ‘F’ to ensure they are functioning correctly. If either sensor is faulty, replace it. | Multimeter, Diagnostic Tool |
| Inspect Wiring and Connections | Visually inspect the wiring and connectors for sensors ‘E’ and ‘F’ to check for damage, loose connections, or corrosion. Repair or replace faulty wiring as necessary. | Flashlight, Multimeter |
| Verify Calibration | Ensure that the sensors are properly calibrated according to the manufacturer’s specifications. Recalibrate them if necessary. | Diagnostic Tool, Vehicle Manual |
| Clear the Code and Test Drive | After making repairs or adjustments, clear the code using an OBD-II scanner and take the vehicle for a test drive to verify that the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure that the P2140 code has not returned. | OBD-II Scanner |
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