{
  "owners": null,
  "title": "Proterra recall 20V621 (SC-20-141): Proterra Catalyst (2019 to 2020)",
  "url": "https://carsmultiverse.com/recall/20v621/",
  "summary": "Recall 20V621 (Proterra): A power steering fluid leak can increase the risk of a crash. Proterra's own number: SC-20-141.",
  "excerpt": "Proterra Catalyst, model years 2019 to 2020. Filed by Proterra Inc. and reported to NHTSA on 7 October 2020. 8 vehicles potentially affected. What the notice says Proterra Inc. (Proterra) is recalling certain 2019-2020 Battery-Electric 40' Catalyst and 2020 Battery-Electric 35' Catalyst buses. The power steering hose located at the pump and reservoir may leak and sweat fluid through the hose. Is your vehicle included? Check with your VIN at NHTSA , or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on. CarsMultiverse / Recalls Proterra's own number for this recall: SC-20-141. That is the number on the owner letter and on the dealer paperwork. 20V621 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways. Answered from the register this site holds. NHTSA is the record to act on. What the authority says can happen if this is not fixed: “A power steering fluid leak can increase the risk of a crash.” 20V621 Proterra Inc. Steering:Hydraulic Power Assist:Hose, Piping, And Connections 7 October 2020 2019-2020 PROTERRA CATALYST A power steering fluid leak can increase the risk of a crash. Proterra will notify owners, and dealers will inspect and replace the power steering hose, free of charge. The recall began October 6, 2020. Owners may contact Proterra customer service at 1-",
  "register": {
    "authority": "NHTSA",
    "country": "United States",
    "index": "https://carsmultiverse.com/changed/"
  },
  "datePublished": "2026-08-23T21:22:14+00:00",
  "dateModified": "2026-09-16T18:21:11+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"Proterra recall 20V621 (SC-20-141): Proterra Catalyst (2019 to 2020)\", https://carsmultiverse.com/recall/20v621/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}