Mazda CX-9 Grand Touring 2009 Manual page 1155

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P0642 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
VERIFY FREEZE FRAME DATA
2008 Mazda CX-9 Grand Touring
Short to ground between fuel tank pressure sensor terminal C and PCM
terminal 1U
Fuel tank pressure sensor malfunction
Connector or terminal malfunction
Yes Go to the next step.
ACTION