P2128critical severityPowertrain
Throttle/Pedal Position Sensor/Switch E Circuit High
on 2003 Dodge Ram 2500 5.7L V8 Hemi · 4WD
What this code means
High voltage from accelerator pedal position sensor E.
Symptoms
- Limp mode
- Check engine light
- Possible unintended throttle input
Common causes
- Open ground
- Short to voltage in harness
- Failed sensor
Diagnostic steps
- Measure sensor E voltage
- Check ground circuit
- Inspect wiring
Repair notes
Replace accelerator pedal assembly or repair wiring.
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