P2123 High Powertrain

Throttle/Pedal Position Sensor D Circuit High

Common Causes

Short to voltage in accelerator pedal sensor D circuit
Failed APP sensor
PCM reference voltage fault

Common Symptoms

Loss of Power / Reduced Power Mode

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Quick Info

Code P2123
System Powertrain
Severity High

Disclaimer

This information is for diagnostic guidance only. Always verify repairs with a qualified technician before performing safety-critical work.

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