Freezing Mazda

This TSB applies to 2011 Mazda2 vehicles with DTC P0451:00 (fuel tank pressure sensor range/performance problem). This may be caused by water or snow entering and freezing in the atmosphere breather hose of the fuel tank pressure sensor (FTP).
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Mazda wire chafe

Some 2007-2009 Mazda 3 (not including Mazdaspeed3) and 2007-2010 Mazda5 vehicles with VINs lower than JM1CR******367196 (produced before November 6, 2009 may experience the MIL on with DTC P0131/P2251 because the A/F sensor connector bracket contacts and damages the sensor harness.
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Mazda check valve

Some Mazda vehicles may experience a MIL that comes on with DTC P2004 (variable tumble shutter valve stuck open). The cause may be the check valve in the intake manifold vacuum chamber being stuck open. The check valve has now been updated.
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