Thursday, November 15, 2012

2005 - 2011 Toyota Tacoma V6, P0456

P0456 - Evaporative Emission Control System Leak Detected (Very Small Leak)

Repair Procedure:
Bring to Toyota Dealership to reprogram ECM.

1.Using TIS Techstream, check for stored DTCs. If only DTC P0456 is present, proceed to step 2.
2.Clear DTCs.



Confirm that the fuel cap is tight. If it is loose, tighten the cap and finish the repair. If it is not loose, go to step 4.
Check for the Authorized Modifications Label affixed to the vehicle underneath the hood. Confirm if the ECM (PCM) calibration has been updated. If the calibration ID listed is NOT the latest ECM
(PCM) calibration - go to step 5.
Flash reprogram the ECM (PCM).


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