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P2123Powertrain (P)generic

Throttle/Pedal Position Sensor/Switch "D" Circuit High

The throttle or accelerator pedal position sensor D is sending a signal that's too high or stuck at the top of its range. This can cause the engine to run at high idle or feel like it's trying to accelerate when you're not touching the pedal. It's a serious safety concern that needs immediate attention.

No detailed repair guide linked yet. Check back soon or search for related issues.