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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 589 (ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3 WITH TC])DTC P2128NOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

DTC P2128: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2128 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2128 Accelerator pedal position (APP) sensor No. 2 circuit high input
DETECTION CONDITION 
  • The PCM monitors the APP sensor No. 2 signal. If the PCM detects that the APP sensor No. 2 voltage is above 4.5 V  , the PCM determines that the APP sensor No. 2 circuit has a 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.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • TP sensor malfunction
  • Connector or terminal malfunction
  • Open circuit between APP sensor terminal B and PCM terminal 2H
  • Open circuit between APP sensor terminal C and PCM terminal 2A
  • Short to constant voltage in the supply circuit between APP sensor terminal C and PCM terminal 2A
G04324145Courtesy of MAZDA MOTORS CORP.
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