P1890 GMC - Throttle Position Signal Input

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Throttle Position Sensor
  • Throttle Position Sensor harness is open or shorted
  • Throttle Position Sensor circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1890 Gmc Description

With the key on or engine running, the Powertrain Control Module (PCM) determines that the throttle position or throttle angle signal was unreliable for 1 second.
OBDII Code P1890 Gmc - Throttle Position Signal Input - AutoCodes.com

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P1890 GMC Comments

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