The code indicates that the Powertrain Control Module has detected a voltage discrepancy between the redundant ‘E’ and ‘F’ position sensors inside the accelerator pedal assembly. These sensors are designed to produce proportional, correlated signals as the pedal moves; when their readings diverge beyond calibrated limits, the fault stores and the system typically enters a reduced-power fail-safe mode.
Internal degradation of the dual Hall-effect or potentiometric sensors (E and F) causes them to output unequal or non-proportional voltages for a given pedal angle, breaking the required correlation.
Chafing against the pedal bracket, firewall, or floor pan can create opens or high-resistance paths in the 5-volt reference, ground, or signal circuits between the pedal and the PCM.
Moisture intrusion, oxidation, or backed-out pins in the pedal assembly connector or the PCM connector alter circuit resistance and distort the voltage signals seen by the control module.
Foreign objects, carpet interference, or worn pivot bushings can cause the pedal to move unevenly, making the two internal sensors travel at different rates and triggering a correlation error.
An extremely uncommon failure of the analog-to-digital converter or processing logic inside the control module can misinterpret valid sensor signals as a correlation error.
No. Despite frequent misdiagnosis, the root cause is almost always the pedal sensor assembly itself or a wiring issue. PCM failure is exceptionally rare for this specific correlation fault.
The vehicle typically enters limp mode with severely restricted throttle response, which creates a safety hazard in traffic. Drive only as necessary to reach a repair facility.
The redundant sensors provide a safety cross-check; if one fails or sends an implausible signal compared to the other, the PCM defaults to reduced power to prevent unintended acceleration.
Yes. The position sensors are usually integrated into the pedal module and are not serviced separately on most vehicles, requiring replacement of the complete accelerator pedal assembly.