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P2123 — Throttle/Pedal Position Sensor D Circuit High Input

Accelerator pedal position sensor D reading too high.

Severity: HighRepair: $100-$400Difficulty: Medium

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Common symptoms of P2123

Common causes of P2123

Repair cost & difficulty

Typical cost to fix P2123: $100-$400 · Difficulty: Medium

Pro tip: Safety concern — have this diagnosed promptly. Replace accelerator pedal assembly if needed.

Vehicles commonly affected

All makes

Related trouble codes

P2122P2138

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.