P2122critical severityPowertrain
Throttle/Pedal Position Sensor/Switch D Circuit Low
on 1997 Isuzu Amigo 2.6L I4 · 4WD
What this code means
Low voltage from accelerator pedal position sensor D.
Symptoms
- Limp mode
- Engine at idle
- Check engine light
Common causes
- Failed APP sensor
- Short to ground in wiring
- Corroded connector
Diagnostic steps
- Measure voltage at APP sensor D
- Check wiring
- Swap sensor if dual-assembly
Repair notes
Replace accelerator pedal assembly or repair wiring.
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