Throttle/Pedal Position Sensor/Switch E/F Voltage Correlation
What does P2140 mean?
The P2140 code means the vehicle's onboard diagnostic system has detected: Throttle/Pedal Position Sensor/Switch E/F Voltage Correlation. This is a critical severity code.
Common Symptoms
- Reduced engine power
- Throttle mismatch with pedal position
- Hesitation during acceleration
- Limp mode warning
- Check engine light on
Probable Causes (Ranked by Likelihood)
- APP sensor E output not correlating with TPS F on throttle body Very High
- Dirty throttle body causing TPS F position error High
- Failing throttle body TPS F sensor Moderate
- Failing APP sensor E track Moderate
- Wiring fault in E or F circuit causing inaccurate readings Low
Step-by-Step Diagnostic Procedure
-
Monitor both APP sensor E and TPS F on scan tool -- their relationship should be consistent
-
Clean throttle body to ensure accurate TPS F readings
-
Test APP sensor E independently by comparing to APP sensor D
-
Test TPS F independently by comparing to the primary TPS track
-
Replace whichever component (pedal or throttle body) has the faulty sensor
Frequently Asked Questions
Can I drive with code P2140?
Only short distances at reduced power. The PCM cannot verify proper throttle system operation when E and F signals do not correlate. The vehicle will be in limp mode with limited acceleration.
Do I need to replace both the pedal and throttle body?
Not necessarily. Determine which sensor is faulty by comparing each to its paired track. If APP E does not match APP D, replace the pedal assembly. If TPS F does not match the primary TPS, replace the throttle body. Only replace the component with the faulty sensor.
How many position sensors does the electronic throttle system have?
A typical drive-by-wire system has four position sensors -- two on the accelerator pedal (D and E circuits) and two on the electronic throttle body (primary and F circuits). The PCM cross-references all four to verify safe operation.