Proterra 2021 Catalyst Buses: Loose Steering Gearbox Risk
Proterra recalls 2017-2022 Catalyst buses due to potential steering loss from loose gearbox bolts. Owners must contact Proterra for free repairs by October 2022.
Use caution until it’s fixed
A loose steering gearbox can cause a loss of steering control, increasing the risk of a crash.
Contact the company
What happened, in plain English
Proterra is recalling certain 2017-2022 Catalyst buses because a loose steering gearbox could cause loss of steering control and increase crash risk. Owners should contact Proterra for free repairs to fix the issue. Read more at govinfonow.com/recall/80649-proterra-2021-catalyst-buses-loose-steering-gearbox-risk.
Source Summary by GovInfoNow · govinfonow.com/recall/80649-proterra-2021-catalyst-buses-loose-steering-gearbox-risk · Updated October 4, 2026 · Official notice: NHTSA #22V114000
Cite this page
“Proterra 2021 Catalyst Buses: Loose Steering Gearbox Risk.” GovInfoNow, updated October 4, 2026. https://govinfonow.com/recall/80649-proterra-2021-catalyst-buses-loose-steering-gearbox-risk. Based on NHTSA recall #22V114000 (https://www.nhtsa.gov/recalls?nhtsaId=22V114000).
Why it’s dangerous
The plexus adhesive between the torque limiter plate and bus body may be insufficient, causing steering gearbox bolts to loosen. This can lead to loss of steering control and increase crash risk during normal operation.
Who’s affected
Owners of Proterra Catalyst buses from 2017-2022 models are affected. Drivers and passengers on these buses face the highest risk due to potential loss of steering control.
How to tell if you have this one
Check if your bus is a Proterra Catalyst model from 2017-2022. The specific models include 35/40 foot E2, RR, and ZX5 buses.
- Brand
Proterra- Category
Vehicle
What to do — step by step
Contact Proterra
Call Proterra customer service at 1-864-438-0000 to schedule a free repair for the steering gearbox.
Get Free Repair
Dealers will install a mechanical fastener, new bolts, and a new torque plate as needed at no cost to fix the steering gearbox issue.
What NHTSA says to do
Dealers will install a mechanical fastener and new bolts on the steering gearbox, and install a new torque plate, as necessary, free of charge. Owner notification letters were mailed October 7, 2022. Owners may contact Proterra's customer service at 1-864-438-0000.
How this recall unfolded
Recall timeline
Owners were mailed letters 7 months after NHTSA received the defect report.
- NHTSA received the defect report
- Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Contact Proterra
We’ve drafted a message you can send Proterra to request your refund or repair — edit it as you like.
Subject: Recall 22V114000 — Proterra 2021 Catalyst Buses: Loose Steering Gearbox Risk Hello, I own a Proterra 2021 Catalyst Buses: Loose Steering Gearbox Risk that is covered by recall 22V114000 from Proterra. The official recall notice states: Dealers will install a mechanical fastener and new bolts on the steering gearbox, and install a new torque plate, as necessary, free of charge. Owner notification letters were mailed October 7, 2022. Owners may contact Proterra's customer service at 1-864-438-0000. I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this? Thank you.
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Where this comes from
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
- Official source: NHTSA Recall #22V114000 (February 28, 2022)
- Plain-language summary written by qwen3:4b on October 4, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
- GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.