Powertrain, generic (extended)

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

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2140 checks the second and third pedal tracks, E and F, against each other. As with P2139, no manufacturer explains its own trigger for this code, and FCA's emissions recall T21 for the 2004-2006 Dodge Sprinter just includes it in the list of codes that may follow the ECU reflash. GM's 2004-2005 trucks show what the comparison looks like in practice: their P2126 sets when sensor 2 differs from sensor 1 by more than 0.20 V and from the rescaled sensor 3 by more than 0.26 V, so the E-to-F term is part of a vote rather than a code of its own. Because track E is often scaled differently from F, a fault on a shared reference can shift one signal more than the other. Warning lamp and reduced pedal response follow.

Likely causes

Track E or F of the pedal sensor worn or drifted
Shared 5 V reference or ground fault shifting one track
Contact resistance or moisture at the pedal connector

Symptoms

  • Engine or wrench warning lamp on
  • Reduced or delayed pedal response

Repair estimate

DifficultyEasyDIY possible
Parts and labour€20–350
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

throttle position sensoraccelerator pedal position sensor

Related codes

P2138P2139P2126P2131P2130P212F

References: static.nhtsa.gov, gsi.ext.gm.com, law.cornell.edu.