Jun 052017
 

2004 Ford EscapeLoss of power, struggles to reach 25 mph. Trouble codes: p1120, po113, po403, po511. I replaced TPS sensor. Checked for vacuum leaks and seem to hear vacuum leak at egr valve. What to do?Also, when idling,is there supposed to be constant vacuum to the egr valve?


 

Ford Code P1120 – Throttle Position Sensor Out of Range

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

Ford Code P1120 Possible causes

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

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