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P1120

P1120 - Throttle Position Sensor Out Of Range

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
What does this mean? What does this mean?
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- No throttle response
P1120 Description

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

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