Code result
P2138
Throttle/Pedal Position Sensor "D"/"E" Voltage Correlation
High severity
What it means
The two redundant accelerator pedal position sensors disagree by more than the allowed tolerance. The ECU cannot trust either signal and switches to limp-home with very limited torque. Often appears intermittently with a worn pedal sensor before failing outright.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Pedal position sensor worn or contaminated
highOne of the most commonly reported causes for this code — check this first.
Corroded pedal connector
mediumA plausible cause — test and verify before replacing parts.
Related help
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