Revision notice

Bulletin number

T-SB-0166-19_Rev

Component

Engine and engine cooling

Summary

TSB: REVISION NOTICE January 23, 2020 Rev1: G1439 The Parts Information, Calibration Information, and Repair Procedure sections have been updated. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0058-13.Service Bulletin No. T-SB-0058-13 is obsolete and any printed versions should be discarded. Some 2009 ? 2018 model year Sequoia and 2009 ? 2019 model year Tundra vehicles equipped with a 3UR-FBE engine may exhibit a hard start and/or MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs): ? DTC P0171 and/or P0174 (System Too Lean Bank 1/Bank 2) ? DTC P0172 and/or P0175 (System Too Rich Bank 1/Bank 2) ? DTC P1604 (Startability Malfunction) Techstream data list analysis may reveal negative fuel trims and an elevated alcohol density estimate relative to the vehicle?s actual fuel alcohol content. Follow the Repair Procedure in this bulletin to address these conditions.

Owners of these vehicles have filed 204 complaints in the engine category.