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Home >> Mazda >> 2008 >> 5 Touring, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3) >> DTC P2138 [L3] >> Notes
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DTC P2138 [L3]: Notes

DTC P2138 [L3] DETECTION CONDITIONS AND POSSIBLE CAUSES

DTC P2138 Accelerator pedal position (APP) sensor No.1 / No.2 voltage problem
DETECTION CONDITION 
  • The PCM compares the input voltage from APP sensor No.1 with the input voltage from APP sensor No.2 when the engine is running. If the difference is more than the specification, the PCM determines that there is an APP sensor No.1/No.2 angle correlation problem.

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.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • APP sensor No.1 malfunction
  • APP sensor No.2 malfunction
  • Connector or terminal malfunction
  • PCM malfunction
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