NHTSA lists 1 complaints for the 2021 Proterra Catalyst, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.
Data build 2026-10-08.
NHTSA lists this vehicle as PROTERRA CATALYST.
Model-generated complaint tags
These labels are model-generated, not NHTSA data.
Failure modes| Label | Count | Share of tagged | Mean confidence |
|---|
| electrical electronic | 1 | 100.0% | 0.99 |
|---|
Severities| Label | Count | Share of tagged | Mean confidence |
|---|
| moderate | 1 | 100.0% | 0.35 |
|---|
Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 1 tagged complaints of 1 complaints (100.0%).
Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.
Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.
Recalls
See new recalls and investigations this week.
5 recalls.
Date: 2024-09-06. Systems: ELECTRICAL SYSTEM.
Defect: Phoenix Motorcars (Phoenix) is recalling certain 2019-2021 800V Catalyst and 2020-2022 ZX5 transit buses. The vehicle controller software may allow the electrical circuit for the radiator fan to overheat.
Consequence: Electrical circuits that overheat increase the risk of a fire.
Remedy: Dealers will update the vehicle software, free of charge. Owner notification letters were mailed October 15, 2024. Owners may contact Phoenix customer service at 1-909-987-0815.
Do not drive: No. Park outside: No.
Date: 2023-10-17. Systems: ELECTRICAL SYSTEM.
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2019-2022 40' and 35' Catalyst 800V transit buses equipped with ProDrive 1.0, and 40' and 35' ZX5 800V transit buses equipped with ProDrive 1.0. A transistor inside the inverter may overheat and fail, which can result in a loss of power steering and drive power.
Consequence: A loss of power steering and/or drive power increases the risk of a crash.
Remedy: Dealers will replace the inverter, free of charge. Owner notification letters were mailed December 16, 2023. Owners may contact Proterra customer service at 1-864-438-0000.
Do not drive: No. Park outside: No.
Date: 2023-02-13. Systems: VISIBILITY.
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2020-2022 35" Catalyst, 35" ZX5, and 40" ZX5 vehicles. The windshield wiper motors may operate intermittently or may fail to operate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 104, "Windshield Wiping and Washing Systems."
Consequence: Inoperative windshield wipers can reduce visibility in certain driving conditions, increasing the risk of a crash.
Remedy: Dealers will replace the wiper motors, free of charge. Owner notification letters were mailed April 3, 2023. Owners may contact Proterra customer service at 1-864-438-0000.
Do not drive: No. Park outside: No.
Date: 2022-11-18. Systems: PARKING BRAKE.
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2020-2021 Catalyst and 2019-2022 ZX5 transit buses. Back pressure in the shared air exhaust for the pneumatic ride height system and parking brake control valve may engage the parking brake while the vehicle is in motion.
Consequence: Unintentional engagement of the parking brake increases the risk of a crash.
Remedy: Proterra will install a redesigned air circuit, free of charge. Owner notification letters were mailed on December 21, 2022. Owners may contact Proterra's customer service at 1-864-438-0000.
Do not drive: No. Park outside: No.
Date: 2022-02-28. Systems: STEERING.
Defect: Proterra, Inc. (Proterra) is recalling certain 2017-2019 35 foot Catalyst E2, 2017-2019 40 foot E2, 2020-2021 35 foot RR, 2019-2020 40 foot RR, 2019-2022 40 foot ZX5, and 2020-2022 35 foot ZX5 buses. The plexus adhesive between the torque limiter plate and the bus body may be insufficient, causing the bolts that secure the steering gearbox to loosen.
Consequence: A loose steering gearbox can cause a loss of steering control, increasing the risk of a crash.
Remedy: 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.
Do not drive: No. Park outside: No.
Manufacturer communications
55 manufacturer communications.
Communications by system| System | Count |
|---|
| ELECTRICAL SYSTEM | 25 |
|---|
| STRUCTURE | 14 |
|---|
| SERVICE BRAKES | 9 |
|---|
| FUEL/PROPULSION SYSTEM | 5 |
|---|
| STEERING | 5 |
|---|
| SUSPENSION | 3 |
|---|
| ENGINE | 2 |
|---|
| POWER TRAIN | 2 |
|---|
11006603
Date: 2024-05-16. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, ENGINE, ENGINE AND ENGINE COOLING.
Software update for the 800vRRs Vehicle and Body Software to reduce the radiator fan current draw to 80%. Additionally corrects a bug to properly route ESM faults away from the coolant light icon.
11006589
Date: 2024-01-23. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
BMS software update to the latest version. It improves current sensors performance and adjusts the isolation fault threshold value.
11009063
Date: 2023-12-11. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, SUSPENSION.
Relocation of the air compressors intake as well as adding a preliminary filter at the top of the air intake.
11009040
Date: 2023-11-27. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
The procedure describes the process of updating the Customer CAN Gateway to improve data retrieval on specific customer ITS equipment on ZX5 vehicles.
11007830
Date: 2023-11-18. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
This procedure adds improved caps to the coolant system for 800V buses.
11007755
Date: 2023-10-14. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN.
This procedure describes the process for updating the 800VRR Prodrive Vehicle, Powertrain, Body Controller, ESM and Charge Controller software to BuSCoM 2.0.
11007757
Date: 2023-08-23. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, SERVICE BRAKES.
This procedure describes the process for updating the Vehicle and Body Controller software to the latest version on 800v RR Prodrive buses.
11010912
Date: 2023-08-08. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
Bulletin instructions for rotating the ambient temp sensor 180deg on transit buses to reduce road debris from accumulating on the temp sensor.
11009062
Date: 2023-07-11. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, SUSPENSION.
Relocation of the air compressors intake as well as adding a preliminary filter at the top of the air intake..
11010425
Date: 2023-04-04. Type: Service Bulletin/Repair Instructions. Systems: STEERING.
Bulletin to add shim under the steering TLP due to build variances of the bodies and bond gaps.