Affected Component: ELECTRICAL SYSTEM

Date Published
JUN 20, 2022
NHTSA TSB #
10224111
TSB Document
Summary
TT: Some 17-22MY Highlander and 17-20MY Sienna vehicles may experience a MIL ON condition with DTC(s) P042000, and/or P043000. This issue could involve deteriorated catalyst material from the bank 1 or bank 2 catalytic converter.