P0A7A: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P0A7A on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

5 complaints filed with NHTSA mention P0A7A, 1 of them since 2015, across 5 different models. The component owners most often filed it under: engine.

Manufacturer service bulletins that name P0A7A

6 technical service bulletins and manufacturer communications filed with NHTSA mention P0A7A, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • TOYOTA PRIUS (2010, 2011, 2012, 2013), bulletin 10235231: DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the intelligent power module …
  • TOYOTA AVALON (2012, 2013, 2014, 2015), bulletin 10132644: TSB: Some 2012 ? 2016 model year Avalon HV, Camry HV and RAV4 HV vehicles may exhibit a MIL ?ON? condition with DTC P0A7A with information code 122 (Generator Inverter Fail Signal Detection). Follow the procedure in this…
  • LEXUS ES HYBRID (2013, 2014, 2015, 2016), bulletin 10132643: TSB: Some 2013 ? 2016 model year ES 300h, GS 450h and NX 300h vehicles may exhibit a MIL ?ON? condition with DTC P0A7A with information codes 122 (Generator Inverter Fail Signal Detection). Follow the procedure in this b…
  • TOYOTA CAMRY (2012, 2013, 2014, 2015), bulletin 10161538: TSB: REVISION NOTICE May 23, 2019 Rev1: ? The Applicable Warranty has been updated. Any previous printed versions of this bulletin should be discarded. Some 2012 ? 2016 model year Avalon Hybrid, Camry Hybrid, and RAV4 Hy…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.