2004 Mazda3 (2.0L & 2.3L, California spec only)
Some vehicles may experience MIL illumination with DTC P0456 stored in PCM memory.
P0456: Evaporative emission control system leak detected (very small leak)
The DTC may be caused by incorrect software calibration in the PCM.
Customers having this concern should have their vehicle repaired using the following repair procedure.
NOTE: This repair is not intended to fix normal evaporative system leak issues. It is important to perform all diagnostic checks and repair system leaks prior to starting the following procedure.
CAUTION: Make sure correct calibration part number is used based on transmission.
NOTE:
NOTE: After PCM reprogramming, it is no longer necessary to road test the vehicle to "relearn" KAM (Keep Alive Memory).
Engine |
Transmission |
New PCM Calibration Part Number |
File Name |
2.0L |
M/T |
LFH7-18-881A |
SW-LFH7EA000 |
2.0L |
A/T |
LFH8-18-881A |
SW-LFH8EA000 |
2.3L |
M/T |
L3S7-18-881A |
SW-L3S7EA000 |
2.3L |
A/T |
L3S8-18-881A |
SW-L3S8EA000 |
NOTE: The PCM Calibration Part Numbers listed above are provided for PCM reprogramming purposes only. These are not necessarily the same Mazda part numbers used to order an actual PCM through the Mazda Parts System. It is not necessary to order a PCM as part of this repair procedure.
NOTE:
Warranty Type |
A |
Symptom Code |
6X |
Damage Code |
9W |
Part Number Main Cause |
LF67-18-881 2.0L M/T LF69-18-881 2.0L A/T L3Z3-18-881 2.3L M/T L3Z4-18-881 2.3L A/T |
Quantity |
0 |
Operation Number / Labor Hours: |
XX790XRX / 0.4 |