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Code
P0122
Throttle

Throttle position sensor circuit low input

The throttle position signal is too low.

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Most likely causes

  1. Faulty TPS
  2. Wiring short
  3. Bad ground

Symptoms you may notice

  • Check engine light
  • Poor throttle response
  • Rough idle

Checks to run

  1. Read TPS live
  2. Test wiring
  3. Check the sensor

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

Throttle position sensor / pedal circuit malfunction

 P0121

Throttle position sensor range / performance problem

 P0220

Throttle position sensor B circuit malfunction

 P0638

Throttle actuator control range / performance

 P2101

Throttle actuator control motor circuit range / performance
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