P0A80 on Toyota vehicles

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Toyota filed with NHTSA whose summary names P0A80. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• T-TT-0365-15 Service bulletin
  2015-09-25 · Electrical System — 12V/24V/48V Battery
• TT: A VEHICLE MAY ARRIVE TO THE DEALER WITH A MIL “ON” CONDITION AND P0A80 STORED IN THE MEMORY. SOME CASES HAVE BEEN IDENTIFIED WITH INTERNAL MODIFICATION DONE TO THE HV BATTERY. MODIFIED OR ALTERED PARTS ARE NOT COVERED UNDER WARRANTY.
• T-TT-0397-16 Service bulletin
  2016-05-24 · Electrical System
• TT: SOME CUSTOMERS MAY COMPLAIN ABOUT A MIL “ON” WITH A P0A80 DTC. IN THESE CASES, THE HV BATTERY WOULD NEED TO BE REPLACED. ALONG WITH THE HV BATTERY REPLACEMENT, THE COOLING SYSTEM FILTER WILL NEED EITHER CLEANING OR REPLACEMENT. THIS TT PROVIDES INFORMATION ABOUT THE HV BATTERY COOLING SYSTEM FILTER.
• T-TT-0365-15 Rev Service bulletin
  2017-02-02 · Electrical System — 12V/24V/48V Battery
• TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 or P1AC000 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
• T-TT-0365-15_Rev Service bulletin
  2017-03-13 · Electrical System — 12V/24V/48V Battery
• TT: Rev2 A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 or P1AC000 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
• T-TT-0365-15 Service bulletin
  2016-10-03 · Equipment
• TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
• T-TT-0365-15 Service bulletin
  2015-09-25 · Electrical System — 12V/24V/48V Battery
• TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
• T-SB-0074-20 Service bulletin
  2020-08-05 · Engine And Engine Cooling — Cooling System — Fan
• TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored
• T-SB-0074-20 Service bulletin
  2020-08-05 · Equipment
• TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored

A stored code names the test that failed, never the part that caused it. The record above is what Toyota and its owners have filed about it; the code’s page across every make has the whole file.