P1120 - Throttle Position Sensor Out Of Range

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What does this mean?

P1120 Possible Causes

  • Faulty throttle position sensor
  • Throttle position sensor harness is open or shorted
  • Throttle position sensor circuit poor electrical connection
  • Throttle position sensor not properly adjusted

First diagnose P1120 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P1120 code

    Labor: 1.0

    The cost of diagnosing the P1120 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P1120 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • No throttle response

P1120 Meaning

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. The TPS is a rotary potentiometer sensor that provides a signal to the Powertrain Control Module (PCM) that is linearly proportional to the throttle plate/shaft position. As the TPS is rotated by the throttle shaft, the following operating conditions are determined by the PCM:
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or de-choke on crank)
• Throttle angle rate
OBDII Code P1120 - Throttle Position Sensor Out Of Range - Engine-Codes.com

P1120 More Information

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