Toyota Prius 2010–2012 — technical service bulletin
Bulletin ZF3_WARRANTY POL · NHTSA communication 10106447 · issued Jun 16, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2010–2012
model years
6
vehicle entries
Official summary
Warranty policy bulletin (pol16-04): in these vehicles, toyota has received some reports of a rough idle and/or rattle noise from the transaxle at cold start due to a sticking exhaust gas recirculation (egr) valve. If this occurs, the vehicle may illuminate the check engine light and set diagnostic trouble code (dtc) p0401.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.