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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICSDIAGNOSTIC TESTSDTC P1124: THROTTLE POSITION (TP) SENSOR OUT OF RANGECONDITION
1999 Mazda 626 ES, 2.5 D, Standard

DTC P1124: Throttle Position (TP) Sensor Out Of Range: Condition

1999 Mazda 626 ES, 2.5 D, StandardSECTION Condition

DTC P1124 indicates TP sensor adjustment may be out of self-test range. Possible causes for this fault are:

  • Faulty TP sensor.
  • Faulty Powertrain Control Module (PCM).

Normal range of throttle angle measurement for TP sensor is 0-85 degrees. To pass quick test procedure, range of throttle rotation (in degrees) must be within 3 percent of specification.

To prevent replacement of good components, be aware, the following areas may be at fault:

  • Idle speed.
  • Binding throttle shaft or linkage.
  • TP sensor not seated.

  1. Adjust Throttle Position Sensor

    Check TP sensor adjustment. See appropriate SYSTEM & COMPONENT TESTING article. Adjust and go to next step. If sensor cannot be adjusted properly, replace TP sensor and go to next step.

  2. Erase DTC From Memory

    Clear PCM memory. Perform test drive utilizing all phases of vehicle operation. Perform QUICK TEST . If DTC P1124 is still present, replace PCM. After repair, go to next step. If DTC P1124 is not present, go to next step.

  3. Recheck DTC

    If any DTCs are present, go to appropriate test for repair. If no DTCs are present, test is complete.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.