Powertrain, generic · Hybrid propulsion

P0A80 Replace Hybrid/EV Battery Pack

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

The battery controller has concluded that the pack is at end of life. In GM tables this is a resistance test: the maximum cell or pack resistance, measured from current and voltage swings, exceeds a temperature-dependent end-of-life threshold, and the code sets as Type A after one trip. Toyota bulletins for Prius (2004–09, 2013–15), Prius v and Camry Hybrid report P0A80, often together with P0A7F, caused by dust in the battery cooling fan; cleaning the fan comes first. Honda recalled the 2018 Accord Hybrid because software wrongly set this code as a permanent fault after pack replacement. Compared with P0A7F it is the final verdict; assist and economy drop and the MIL stays on.

Likely causes

Cell or module resistance above end-of-life limit
Clogged battery cooling fan or intake filter (Toyota)
Controller software misreading a replaced pack (Honda Accord Hybrid 2018)

Symptoms

  • Check engine and hybrid system warning on
  • Noticeably weaker electric assist
  • Higher fuel consumption, engine runs more

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–10,000
Time1–10 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

hv batterybattery energy control module

Related codes

P0A7FP0A7DP0A7EP0A1FP0A81

References: gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov.