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Home >> Mazda >> 2024 >> CX-30 Preferred >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (On-Board Diagnostic - Engine Control (VIN Y) (2 Of 6)) >> DTC P0123-00: TP Sensor No. 1 System: High Input

DTC P0123-00: TP Sensor No. 1 System: High Input

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P0123-00: (PCM - VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location TP sensor No. 1 system: High input
Detection condition
  • The TP sensor No. 1 voltage is higher than the standard.
Fail-safe
  • Restricts the upper limit of the engine speed.
  • Limits engine torque.
Possible cause
  1. Malfunction in wiring harness (including connector/terminal) between TP sensor No. 1 and PCM (see CIRCUIT INSPECTION .) (see CONNECTOR INSPECTION .)
  2. TP sensor No. 1 malfunction (Refer to THROTTLE POSITION (TP) SENSOR INSPECTION (VIN Y) in service information.)
  3. PCM malfunction (Refer to applicable PCM REMOVAL/INSTALLATION (VIN Y) in the service information.
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (see CLEARING DTC .)
  2. Perform the KOEO or KOER self test. (See DTC INSPECTION .)
G16378165Courtesy of MAZDA MOTORS CORP.
1 PCM
2 Throttle body (TP sensor No. 1)