Water Intrusion Into Charcoal Canister Triggers Check Engine Light – TSB
Toyota recently announced a TSB (Technical Service Bulletin) for the 2007-2011 Tundra concerning a condition where the check engine light will show “On.”
The Diagnostic Trouble Codes (DTC) are:
For the following TSB, all five DTC codes must be present.
According to Toyota, “This condition can be caused by water or debris entry into the evaporative control system through the fresh air inlet. To address this condition, the fuel tank fillerpipe has been revised to help prevent water intrusion.”
This TSB applies only to those Tundras that were produced prior to a production change that addressed this issue. Also, your truck needs to be covered by Toyota’s 3-year, 36-month warranty.
The following chart shows the applicable models.
1. First check to make sure all 5 DTCs are present.
2. Check for water or debris in the EVAP system by disconnecting the hose from the key-off pump module. If there is water or debris in the vent hose move to
Step 3. Replace the charcoal canister and filter as outlined in the Repair Manual.
Step 4. Remove the fuel tank filler pipe and replace with updated filler pipe.
Step 5. Clear all DTCs.
Step 6. Perform the Automatic EVAP System Check and verify that no pending DTCs are set.
Filed Under: Tundra Recalls