Question about 2001 Ford Escort ZX2

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Service engine light was on. The scan showed two codes P1744 and P1120. How do I repair these problems?

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  • Ford Master
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DTC P1744 means that the PCM has detected excessive slip in the TC. Refer to the section in the WSM (WorkShop Manual) that is applicable for your transmission for diagnosis.

Usually it means that the TC hasn't been getting enough hydraulic pressure in the TC apply circuit to lock it and it slips. When it slips, the clutch surface in the TC is usually ruined. You'll need to have the hydraulic concern repaired first, then replace the TC.

DTC P1120 - CHECK FOR FRAYED TP CIRCUIT WIRES OR CORROSION ON CONNECTORS
Frayed wires.
Corrosion on TP sensor, PCM or harness connectors.
VREF harness opens or shorts.
Damaged TP sensor.
Damaged PCM.

Diagnostic Trouble Code (DTC) P1120 indicates the TP signal is within the Self-Test range but below the closed throttle position range of 3.43% to 9.80% (0.17 to 0.49 volt).

Note: Throttle Position Sensor A (TP-A) is the same as Throttle Position (TP) Sensor.

Possible causes:
Perform a complete visual inspection of the harness connector at the TP sensor (including pins) for corrosion.
Perform a complete visual inspection of the harness wires between the TP sensor and the PCM for insulation fraying and corrosion.

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Thank you for using FixYa, have a nice day.

Posted on Feb 24, 2012

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Posted on Jan 02, 2017

  • 14 Answers

SOURCE: engine service light / 4 codes read description below

P1744 is probably the TC going on the way out. :(

P 340 is probably the sensor itself. Don't get the Dorman one if it is the OHV motor.

P 401 is probably a bad DPF EGR sensor.

Posted on Jul 26, 2008

  • 14036 Answers

SOURCE: Code P1744 on a 1997 Ford Taurus

sound like torque converter or tranny oil pump problems. have tranny pressure tested.

Posted on Apr 13, 2009

  • 645 Answers

SOURCE: my 2000 ford focus se read p1120. already replaced

does your engine idle fast or slow? You may need to clean the idle selonoid or the throttle body. They carbon up and stick.

Posted on May 22, 2010

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P 401 is probably a bad DPF EGR sensor.

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