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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (On-Board Diagnostic [Engine Controls MZI 3.7] (3 Of 5)) >> DTC P0451:00 >> Notes

DTC P0451:00: Notes

WARNING: This page is about a different variant/trim than selected.
DTC P0451:00 Fuel tank pressure sensor range/performance
DETECTION CONDITION 
NOTE:
  • For some vehicle applications, DTC P0451:00 is set for a fuel tank pressure sensor range (offset) concern. The DTC P0454 replaces the original P0451:00 for intermittent (noisy) sensor concerns. Until the phase in process is complete, noisy or offset fuel tank pressure sensor concerns may set DTC P0451:00.
  • The fuel tank pressure changes more than 14 inches of water in 0.10 s. Fuel tank pressure sensor output is offset by + /- 1.7 inches of water.
POSSIBLE CAUSE 
  • Intermittent open or short in the fuel tank pressure sensor or the fuel tank pressure sensor signal
  • Connector or terminal malfunction
  • Fuel tank pressure sensor malfunction
  • PCM malfunction