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Home >> Mazda >> 2009 >> 5 Touring, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3] >> DTC P0123 [L3] >> Notes

DTC P0123 [L3]: Notes

DTC P0123 (L3) DETECTION CONDITION & POSSIBLE CAUSES

DTC P0123 TP sensor No.1 circuit high input
DETECTION CONDITION 
  • If the PCM detects the TP sensor voltage at PCM terminal 2AK is above 4.85 V while the engine is running, the PCM determines that the TP circuit has malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • TP sensor malfunction
  • Connector or terminal malfunction
  • Open circuit in wiring harness between TP sensor terminal D and PCM terminal 2AP
  • Short to power supply circuit in wiring harness between TP sensor terminal A and PCM terminal 2AK
  • PCM malfunction
G06149033