P2128: Throttle/Pedal Position Sensor/Switch E Circuit High
Do not keep driving
Expect no throttle response or a hard restriction. Have the connector inspected before the pedal is replaced.
What this code means
Sensor E reads above its valid range — an open circuit or a short to supply, indistinguishable at the module. A corroded connector produces an open just as effectively as a broken wire, and is more likely in a footwell.
Likely causes
Start here
- Open circuit in sensor wiring · moderate
- Corroded accelerator pedal connector · easy
- Faulty accelerator pedal position sensor · easy
Less common
- Wiring shorted to voltage · moderate
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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