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Code
P2122
Throttle

Throttle / pedal position sensor D circuit low

The accelerator pedal position sensor D signal is too low.

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Most likely causes

  1. Faulty pedal sensor
  2. Wiring short
  3. Bad connector

Symptoms you may notice

  • Check engine light
  • Limp mode
  • Poor throttle response

Checks to run

  1. Read the pedal sensor live
  2. Test the sensor circuit
  3. Inspect wiring

Tools you may need

OBD-II scanner Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Throttle

P0120

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 P0121

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 P0220

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 P0638

Throttle actuator control range / performance

 P2101

Throttle actuator control motor circuit range / performance
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