2020 PROTERRA CATALYST
8 recalls, 0 complaints - 8 TSBs
24V655000 Sep 6, 2024
ELECTRICAL SYSTEM
Defect Description
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.
23V697000 Oct 17, 2023
ELECTRICAL SYSTEM
Defect Description
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 pow... Read more
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.
23V078000 Feb 13, 2023
VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR
Defect Description
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 Standa... Read more
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.
22V855000 Nov 18, 2022
PARKING BRAKE
Defect Description
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.
22V114000 Feb 28, 2022
STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
Defect Description
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 ... Read more
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.
21V268000 Apr 19, 2021
ELECTRICAL SYSTEM:SOFTWARE
Defect Description
Proterra, Inc. (Proterra) is recalling certain 2019-2020 Catalyst 40 foot buses. A software defect in the body controller that operates the door motor may allow the rear door to open unexpectedly.
Consequence
The rear door may open without the driver's awareness, increasing the risk of injury.
Remedy
Proterra will notify owners, and dealers will update the software, free of charge. Owner notification letters were mailed on June 11, 2021. Owners may contact Proterra customer service at 1-864-438-0000.
20V664000 Oct 28, 2020
STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
Defect Description
Proterra Inc. (Proterra) is recalling certain 2018-2020 35 foot and 40 foot Catalyst buses. Lack of plexus adhesive between the torque plate and the vehicle chassis may cause the bolts securing the steering gear box to loosen.
Consequence
An unsecured steering gear box could cause the driver to lose the ability to steer the vehicle, increasing the risk of crash or injury.
Remedy
Proterra will notify owners, and dealers will inspect the steering gear mounting bolts and the plexus adhesive layer between the torque plate and the chassis. If the plexus adhesive layer is missing or insufficient, the components will be repaired, free of charge. The recall began December 10, 202... Read more
20V621000 Oct 7, 2020
STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS
Defect Description
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.
Consequence
A power steering fluid leak can increase the risk of a crash.
Remedy
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 1-864-438-0000. Proterra's number for this recall is SC-20-141.
No complaints found for this vehicle.
Technical Service Bulletins, 2020 PROTERRA CATALYST
8 manufacturer communications from 5 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 110000 ELECTRICAL SYSTEM | 3 |
| 118000 ELECTRICAL SYSTEM:SOFTWARE | 2 |
| 350000 EQUIPMENT | 1 |
| 356000 EQUIPMENT ADAPTIVE/MOBILITY | 1 |
| 100000 POWER TRAIN | 1 |
SC-20-133
Sep 10, 2020
110000 ELECTRICAL SYSTEM
The reason for this software update is to the vehicle controller to the latest software version.
SC-20-115
Aug 24, 2020
100000 POWER TRAIN
This procedure updates the Powertrain software to the latest version for improved powertrain performance. A White Paper showing an overview is provided at the end of this document.
SC-20-115
Aug 24, 2020
118000 ELECTRICAL SYSTEM:SOFTWARE
This procedure updates the Powertrain software to the latest version for improved powertrain performance. A White Paper showing an overview is provided at the end of this document.
SC-20-103
Aug 7, 2020
110000 ELECTRICAL SYSTEM
This procedure adds electromagnetic interference filters to the variable frequency drive systems on the bus to resolve potential charging and startup issues.
SC-20-103
Aug 7, 2020
350000 EQUIPMENT
This procedure adds electromagnetic interference filters to the variable frequency drive systems on the bus to resolve potential charging and startup issues.
SC-20-103
Aug 7, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
This procedure adds electromagnetic interference filters to the variable frequency drive systems on the bus to resolve potential charging and startup issues.
SC-20-089
Jul 23, 2020
110000 ELECTRICAL SYSTEM
This retrofit ensures that the Koni Shock Absorbers are torqued to the correct value as established by the shock manufacturer.
SC-20-091
Jul 15, 2020
118000 ELECTRICAL SYSTEM:SOFTWARE
The reason for this software update is to update various controllers to the latest state of the art software. This will improve vehicle up-time, reduce driver interactions with the doors, and improve diagnostic fault handling. All the inclu
NHTSA Safety Investigations, PROTERRA CATALYST
Investigations opened by NHTSA into potential safety defects. These are separate from recalls and may or may not result in a recall.
RQ25001
Opened: Jun 27, 2025
Remedy Effectiveness of Recall 22V887
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, Pr... Read more
PROTERRA CATALYST - All Years Overview
Complete safety history for the PROTERRA CATALYST across all model years (2015, 2022).
52
Total Recalls
1
Total Complaints
1
Investigations
0
Reported Crashes
0
Reported Fires
0
Reported Deaths