P1A0C: owner reports and bulletins

Powertrain (manufacturer-specific). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P1A0C 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

6 complaints filed with NHTSA mention P1A0C, 4 of them since 2015, across 4 different models. The component owners most often filed it under: power train.

Manufacturer service bulletins that name P1A0C

23 technical service bulletins and manufacturer communications filed with NHTSA mention P1A0C, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • LINCOLN AVIATOR PHEV (2022, 2020, 2021), bulletin 10210236: Some 2020-2022 Aviator Hybrid vehicles may exhibit an illuminated MIL and a Stop Safely Now message with only DTC P1A0C stored in the PCM. This may be due to the software in the battery energy control module (BECM). The …
  • FORD EXPLORER HYBRID (2020, 2021, 2022), bulletin 10212101: Some 2020-2022 Explorer/Aviator Hybrid vehicles built on or before 11-Apr-2022 may exhibit an illuminated malfunction indicator lamp (MIL) with only diagnostic trouble code (DTC) P1A0C stored in the PCM. This may be due …
  • FORD EXPLORER PHEV (2020, 2021, 2022), bulletin 10222524: Certain 2020 - 2022 Model Year Aviator PHEV and Explorer PHEV Vehicles Reprogram Powertrain Control Module In all of the affected vehicles, if the vehicle is charging via the charging cable and the customer requests a re…
  • FORD ESCAPE HYBRID (2020, 2021), bulletin 10191178: Some 2020-2021 Escape hybrid electric vehicles (HEV) built on or before 29-Mar-2021 may experience a lack of power, crank/no start, and Stop Safely Now message with diagnostic trouble codes (DTC) P2282, P0106 and/or P1A0…
  • FORD ESCAPE (2020, 2021), bulletin 10205723: Certain 2020-2021 Model Year Escape 2.5L HEV PHEV Vehicles Reprogram Powertrain Control Module (PCM) In some of the affected vehicles, it may be possible that the TMAP (Temperature Manifold Absolute Pressure) sensor may …
  • JEEP WRANGLER (2021), bulletin 10212405: Flash: Battery Pack Control Module (BPCM) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp (MIL) illum…

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.