DTC P0455 [MZI-3.7]
DTC P0455 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
z
Verify related pending code or stored
DTCs.
z
Is other DTCs present?
No
TROUBLESHOOTING". Then go to the next
step.
4
VERIFY TROUBLESHOOTING OF
DTC P0454 HAS BEEN COMPLETED
z
Verify that all disconnected
connectors reconnected.
z
Clear the DTC from the PCM memory
using the M-MDS.
z
Perform the "KOEO or KOER self-
test" using the M-MDS.
(See
KOEO/KOER SELF TEST
[MZI-3.7]
.)
z
Is the PENDING CODE for the DTC
present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
No
Go to the next step.
5
VERIFY AFTER REPAIR
PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTCs present?
Yes Go to the applicable DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0455
Evaporative emission system leak detected (gross leak/no flow)
DETECTION
CONDITION
z
P0455 indicates that a substantial leak or blockage has been detected in the
EVAP system when there is - 1.74 kPa (PID FTP_H2O displays "-7.0") or less
vacuum for a 30 seconds evaluation time.
POSSIBLE
CAUSE
z
After-market EVAP hardware (such as fuel-filler cap) not conforming to
required specifications.
z
Disconnected or cracked fuel chopping timer tube, CV solenoid valve outlet
tube or EVAP return tube.
z
CV solenoid valve stuck closed
z
Damaged or missing fuel-filler cap.
z
Insufficient fuel-filler cap installation.
z
Loose fuel vapor hose/tube connections to EVAP system components.
z
Blockages or restrictions in fuel vapor hoses/tubes.
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.
