Emissions - MIL ON/DTC P0456 Set
T-SB-0130-10May 13, 2010
MIL "ON" Code P0456
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
Introduction
Some 2010 model year Prius and 2011 Sienna vehicles may exhibit a MIL "ON" condition with Diagnostic Trouble Code (DTC) P0456 stored in the Engine Control Module or ECM (SAE term:
Powertrain Control Module/PCM). Use the following repair procedure to address this condition.
Production Change Information
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
Parts Information
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date.
^ 2010 Prius
For California specification 2010 Prius vehicles sold, registered, and operated in California, Connecticut, Maine, Massachusetts, New Jersey, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington, the charcoal canister is covered under the California Emission Warranty, which is 180 months or 150,000 miles, whichever occurs first, from the vehicle's in-service date.
^ 2011 Sienna
For California specification 2011 Sienna vehicles sold, registered, and operated in California, Connecticut, Maine, Massachusetts, Maryland (starting 11 MY), New Jersey, New Mexico (starting 11 MY), Oregon, Pennsylvania, Rhode Island, Vermont, and Washington, the charcoal canister is covered under the California Emission Warranty, which is 36 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to occurrence of the specified condition described in this bulletin.
Required Tools & Equipment
NOTE
Additional TIS Techstream units may be ordered by calling Approved Dealer Equipment (ADE).
Repair Procedure
1. Using TIS Techstream clear any stored DTCs.
2. Using TIS Techstream perform the EVAP System Check to confirm DTC P0456 - Evaporative Emission Control System Leak Detected (Very Small Leak) is pending.
3. Refer to the Technical Information System (TIS) applicable model Repair Manual:
^ 2011 Sienna:
2GR-FE Engine Control SFI System: Data List / Active Test
^ 2010 Prius:
2ZR-FXE Engine Control: SFI System: Data List / Active Test
NOTE
If DTC P0456 does not return, this TSB does not apply.
4. If P0456 is present confirm the charcoal canister pump electrical connector is fully seated and verify no Evap leaks are present.
5. If no Evap leaks are found replace the charcoal canister assembly. Refer to the Technical Information System (TIS) applicable model Repair Manual:
^ 2011 Sienna:
2GR-FE Emission Control: Canister: Removal / Installation
^ 2010 Prius:
2ZR-FXE Emission Control: Canister: Removal / Installation
6. After the repair is complete clear any DTCs and perform the EVAP System Check again to confirm normal system operation and there are NO pending DTCs.