TSB: Some 2012 ? 2014 model year Tacoma vehicles equipped with 1GR-FE engines may exhibit a MIL "ON" condition for the following Diagnostic Trouble Codes (DTCs):
? P015A - A/F Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1
? P015B - A/F Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1
? P015C - A/F Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1
? P015D - A/F Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1
This condition may be caused by A/F sensor misdetection under certain driving conditions.
