Toyota Prius 2004–2009 — technical service bulletin
Bulletin TSB-0166-09 · NHTSA communication 10030354 · issued May 28, 2009
Technical service bulletin
communication type
Electrical System
component
2004–2009
model years
6
vehicle entries
Official summary
Toyota: some vehicles may exhibit a m.i.l. On condition with one of more of the following diagnostic trouble codes (dtcs): p0ac0; p0a1f; p0a7f; p0afa (hybrid battery pack/system). Improvements have been made to the hv ecu and battery ecu hardware to correct these conditions. *pe
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.