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Home >> Mazda >> 2007 >> CX-9 Touring, 3.5 Y, FWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System MZI-3.5) >> DTC P2121, P2126, P2131 >> Notes

DTC P2121, P2126, P2131: Notes

DTC P2121, P2126, P2131 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2121 APP sensor No.1 circuit range/performance
DTC P2126 APP sensor No.2 circuit range/performance
DTC P2131 APP sensor No.3 circuit range/performance
DETECTION CONDITION 
  • APP sensor fault flag is set for sensor No.1, No.2 and No.3 by the PCM, indicating the signal is out of the normal self-test operating range.
POSSIBLE CAUSE 
  • APP sensor signal circuits are shorted each other
  • APP sensor malfunction
  • PCM malfunction

    P2121 

    • Open circuit wiring harness between APP sensor terminal E and PCM terminal 1 AK
    • Short to ground circuit between APP sensor terminal E and PCM terminal 1 AK
    • Short to power supply in wiring harness between APP sensor terminal E and PCM terminal 1 AK

    P2126 

    • Open circuit wiring harness between APP sensor terminal H and PCM terminal 1 AG
    • Short to ground circuit between APP sensor terminal H and PCM terminal 1 AG
    • Short to power supply in wiring harness between APP sensor terminal H and PCM terminal 1 AG

    P2131 

    • Open circuit wiring harness between APP sensor terminal B and PCM terminal 1 AC
    • Short to ground circuit between APP sensor terminal B and PCM terminal 1 AC
    • Short to power supply in wiring harness between APP sensor terminal B and PCM terminal 1AC
G04969316Courtesy of MAZDA MOTORS CORP.
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