RCRecallCheck

NHTSA make / model monitor

Proterra Catalyst: recalls, complaints and investigations.

Results are official records from named sources. Coverage is incomplete. This site is not medical advice and does not publish drug labels, openFDA, Prop 65 or NIH DSLD records.
17historical campaigns
1campaigns in monitoring window
1complaint rows in window
1monitored investigations

Evidence summary

Evidence found
1 recent recall campaign, 1 complaint row, and 1 monitored investigation.
Source coverage
NHTSA complaint and current-action window 2024-08-24 to 2026-09-04; historical campaign count uses the complete official pre- and post-2010 recall files acquired for this release.
What this means
The records were matched to the NHTSA make/model identity “Proterra Catalyst”. Each evidence type is reported separately.
What this does not mean
Complaint reports are allegations, not defect findings or a safety score. Counts are not normalised for sales, registrations, mileage or exposure, and a zero does not prove safety.

Official recall campaigns

Campaigns received in the monitoring window

All NHTSA campaigns

Consumer reports — allegations

Complaint aggregates by model year

Model yearComplaintsCrash flagsFire flagsInjuries / deaths reportedMost common components
20211000 / 0ELECTRICAL SYSTEM (1)

NHTSA says complaints are consumer reports. RecallCheck excludes narratives, VINs, names, contact details and locations. A crash, fire, injury or death flag is reported information, not an independently verified causal finding.

NHTSA defect investigations

Open or recently opened investigations

RQ25001: Remedy Effectiveness of Recall 22V887 open

Opened 2025-06-27Closed not closedELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

In November 2022, Proterra Operating Company, Inc. (Proterra) filed a safety recall (NHTSA recall 22V887) covering nineteen 2017-2019 Proterra Catalyst transit buses to address the potential of liquid accumulation in the 400-volt battery packs, increasing the risk of a fire. On December 16, 2022, Proterra mailed an interim owner notification letter stating that Proterra would physically inspect and analyze each recalled battery pack.In October 2023, Proterra amended their filing to now cover 300 vehicles, with a final remedy plan of updating the battery monitoring software. According to the final remedy documents from Proterra, should liquid be detected within the battery pack, the updated software would illuminate a warning light in the driver's dash display, prevent the batteries from being charged, and reduce the maximum speed of the buses.As of the most recent recall completion rate report, 109 of the 300 buses (36.3%) have received the software update. In August 2023, Proterra declared bankruptcy, with its the three major business areas going to three separate companies.Phoenix Motorcars assumed liability for recall 22V887. On June 5, 2025, a fire occurred at the Southeastern Pennsylvania Transportation Authority (SEPTA) decommissioning lot.Local officials stated that the fire initiated in a battery pack of one of the Proterra buses. The Office of Defects Investigation (ODI) is opening this Recall Query (RQ) to evaluate the remedy effectiveness of recall 22V887 and to further understand the effects of nearly two-thirds of the affected population having not yet received the recall remedy.

Official NHTSA investigations information