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OBD Code P2140

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

CodeP2140
DescriptionThrottle/Pedal Position Sensor/Switch E/F Voltage Correlation
SystemAir Metering

What Does P2140 Mean?

Throttle/Pedal Position Sensor/Switch E/F Voltage Correlation. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the air metering.

Code Breakdown

P = Powertrain code

2 = Manufacturer-specific

How to Fix P2140

Follow these diagnostic steps to identify and resolve the issue. Always start with the simplest checks before moving to more involved repairs.

  1. Inspect the throttle body for excessive carbon buildup and clean if necessary.
  2. Check the electronic throttle body connector for corrosion or damage.
  3. Test the accelerator pedal position (APP) sensor voltage at rest and full travel.
  4. Check for TSBs (Technical Service Bulletins) related to electronic throttle body issues for your vehicle.
  5. If the throttle body motor is unresponsive, replace the electronic throttle body assembly.
  6. Perform a throttle body relearn procedure after replacement (may require a scan tool).
  7. Clear codes and test drive, monitoring throttle response at various speeds.

Note: These are general diagnostic guidelines. Some vehicles may have model-specific procedures. Always consult your vehicle's service manual for exact specifications and torque values. If you are not comfortable performing these steps, visit a qualified mechanic.

Frequently Asked Questions

Is P2140 serious?

Yes — P2140 is considered a high-severity code. You should have it diagnosed and repaired as soon as possible. Driving with this code active may cause further damage to your vehicle or pose a safety risk.

Can I clear P2140 myself?

You can clear any OBD-II code with a code scanner or by disconnecting the battery for 15-30 minutes. However, clearing the code without fixing the underlying problem will cause it to return — usually within one or two drive cycles. If the code triggered the check engine light, the light will come back on. Fix the root cause first, then clear the code.

How much does it cost to fix P2140?

Repair costs vary widely depending on the root cause. Some fixes are free (like tightening a gas cap) while others can cost several hundred dollars (like replacing a catalytic converter or oxygen sensor). A proper diagnosis with a professional scan tool — not just reading the code — is the first step to getting an accurate repair estimate. Many auto parts stores offer free code reading, but a thorough diagnosis usually requires a mechanic.

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