DTC P0457 [MZI-3.7]
DTC P0457 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0457 (MZI-3.7) DIAGNOSTIC PROCEDURE
z
Are any DTC present?
No
Troubleshooting completed.
DTC P0457
Evaporative emission system leak detected (fuel cap loose/off)
DETECTION
CONDITION
z
P0457 indicates that the initial vacuum could not be achieved after a
refueling event and the purge vapor flow is excessive (gross leak).
POSSIBLE CAUSE
z
Missing or loose fuel filler cap.
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
and/or on-line repair information
availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the next
step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE
OR STORED DTCs
z
Turn the ignition switch off then to
the ON position (Engine off).
z
Verify related pending code or stored
DTCs.
z
Are other DTCs present?
NOTE:
z
If DTC P0455 is present,
diagnose that DTC first. (See
ENGINE CONTROL SYSTEM
OPERATION INSPECTION
[MZI-3.7] .)
Yes Go to the appropriate DTC troubleshooting. (See
DTC TABLE [MZI-3.7]
.)
No
Go to the next step.
INSPECT FOR MISSING OR
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
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© 2005 Mitchell Repair Information Company, LLC.
