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Home >> Mazda >> 2007 >> CX-9 Touring, 3.5 C, AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System MZI-3.5) >> DTC P0453 >> Notes
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DTC P0453: Notes

DTC P0453 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0453 Fuel tank pressure sensor high input
DETECTION CONDITION 
  • The PCM monitors the evaporative emission (EVAP) control system fuel tank pressure sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter.
POSSIBLE CAUSE 
  • Fuel tank pressure sensor malfunction
  • Connector or terminal malfunction
  • Open circuit between fuel tank pressure sensor terminal A and PCM terminal 1AB
  • Open circuit between fuel tank pressure sensor terminal B and PCM terminal 1 AL
  • Short to the constant voltage supply circuit between fuel tank pressure sensor terminal A and PCM terminal 1AB
  • Short to power supply between fuel tank pressure sensor terminal C and PCM terminal 1 U
  • Fuel tank pressure sensor power circuit and signal circuit are shorted each other
G04969289Courtesy of MAZDA MOTORS CORP.
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