2019 PROTERRA CATALYST
9 recalls, 0 complaints - 40 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.
22V887000 Nov 30, 2022
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
Defect Description
Proterra Operation Company, Inc. (Proterra) is recalling certain 2017-2019 Catalyst transit buses. One or more battery packs may allow liquid to leak into and accumulate in the battery pack enclosure.
Consequence
The accumulation of liquid inside the battery pack enclosure increases the risk of a fire.
Remedy
Proterra will update software, inspect, and replace the battery pack, free of charge. Owner letters were mailed November 6, 2023. 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.
19V871000 Dec 9, 2019
ELECTRICAL SYSTEM:SOFTWARE
Defect Description
Proterra, Inc. (Proterra) is recalling certain 2019 Catalyst buses. A body controller software update may have disabled the audible and visible warnings that notifies the operator that the brake interlock could be engaged.
Consequence
If the vehicle does warn the driver that the brake interlock is engaged, the rear brakes may overheat, increasing the risk of a fire or crash.
Remedy
Proterra will notify owners, and dealers will update the body controller software, free of charge. The recall began January 16, 2020. Owners may contact Proterra customer service at 1-864-438-0000.
19V460000 Jun 14, 2019
STRUCTURE:EMERGENCY:ESCAPE/EGRESS/EXIT
Defect Description
Proterra, Inc. (Proterra) is recalling certain 2018-2019 Catalyst buses equipped with a certain batch of glass roof hatches. Temperature and vibration stresses may cause the tempered glass roof hatch to shatter.
Consequence
If the tempered glass roof hatch shatters, glass fragments may fall onto passengers, increasing the risk of an injury.
Remedy
Proterra will notify owners, and the glass hatch manufacturer will provide replacement hatch lids, free of charge. The recall began August 13, 2019. Owners may contact Proterra at 1-864-438-0000. Proterra's number for this recall is SC-19-79.
No complaints found for this vehicle.
Technical Service Bulletins, 2019 PROTERRA CATALYST
40 manufacturer communications from 22 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 110000 ELECTRICAL SYSTEM | 15 |
| 350000 EQUIPMENT | 6 |
| 356000 EQUIPMENT ADAPTIVE/MOBILITY | 5 |
| 160000 STRUCTURE | 3 |
| 170000 LATCHES/LOCKS/LINKAGES | 2 |
| 118000 ELECTRICAL SYSTEM:SOFTWARE | 2 |
| 062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY | 1 |
| 050000 PARKING BRAKE | 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
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-20-115
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-20-103
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-20-103
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
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-20-091
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
SC-20-050
Jul 14, 2020
110000 ELECTRICAL SYSTEM
This procedure updates the overhead charge switch to the correct labeling.
SC-20-050
Jul 14, 2020
350000 EQUIPMENT
This procedure updates the overhead charge switch to the correct labeling.
SC-20-050
Jul 14, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
This procedure updates the overhead charge switch to the correct labeling.
SC-20-074
Jul 10, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
This retrofit adds reflective tape to the front of the bus to comply with California state regulations.
SC-20-074
Jul 10, 2020
110000 ELECTRICAL SYSTEM
This retrofit adds reflective tape to the front of the bus to comply with California state regulations.
SC-20-074
Jul 10, 2020
350000 EQUIPMENT
This retrofit adds reflective tape to the front of the bus to comply with California state regulations.
SC-20-084
Jul 10, 2020
062000 ENGINE AND ENGINE COOLING:COOLING SYSTEM
This retrofit removes an unnecessary bleed line in the coolant system that may lead to air entrapment and reduced efficiency of the cooling system.
SC-20-084
Jul 10, 2020
350000 EQUIPMENT
This retrofit removes an unnecessary bleed line in the coolant system that may lead to air entrapment and reduced efficiency of the cooling system.
SC-20-061
Jun 1, 2020
130000 VISIBILITY
This retrofit replaces the shims on the side windows to obtain an improved portal seal to prevent leakage.
SC-20-061
Jun 1, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
This retrofit replaces the shims on the side windows to obtain an improved portal seal to prevent leakage.
SC-20-061
Jun 1, 2020
350000 EQUIPMENT
This retrofit replaces the shims on the side windows to obtain an improved portal seal to prevent leakage.
SC-20-061
Jun 1, 2020
160000 STRUCTURE
This retrofit replaces the shims on the side windows to obtain an improved portal seal to prevent leakage.
SC-20-061
Jun 1, 2020
132000 VISIBILITY:GLASS, SIDE/REAR
This retrofit replaces the shims on the side windows to obtain an improved portal seal to prevent leakage.
SC-20-022
Mar 31, 2020
110000 ELECTRICAL SYSTEM
Updating the defroster software to regulate temperature and mode more accurately.
SC-20-038
Mar 6, 2020
110000 ELECTRICAL SYSTEM
Routine software update to controllers on Catalyst 800V. Includes changes to DWP/Dash Software, Body Controller and Vehicle Controller.
SC-20-016
Feb 13, 2020
110000 ELECTRICAL SYSTEM
This procedure updates the battery management system software to the latest version, addressing diagnostic accuracy and general bug fixes.
SC-20-017
Jan 24, 2020
103300 POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
This procedure relocates the parking brake pressure switch to prevent unintended shifts to neutral.
SC-20-017
Jan 24, 2020
050000 PARKING BRAKE
This procedure relocates the parking brake pressure switch to prevent unintended shifts to neutral.
SC-19-139
Jan 2, 2020
110000 ELECTRICAL SYSTEM
This campaign corrects a supplier issue with the wiring of current transducers in the high voltage junction box.
SC-19-133
Nov 15, 2019
356000 EQUIPMENT ADAPTIVE/MOBILITY
This campaign updates the Grayson battery thermal management system to the latest version for improved performance.
SC-19-133
Nov 15, 2019
350000 EQUIPMENT
This campaign updates the Grayson battery thermal management system to the latest version for improved performance.
SC-19-133
Nov 15, 2019
110000 ELECTRICAL SYSTEM
This campaign updates the Grayson battery thermal management system to the latest version for improved performance.
SB-19-87
Aug 14, 2019
110000 ELECTRICAL SYSTEM
This retrofit installs a resistor in parallel with the ADA Alarm to prevent it from sounding when the ADA Ramp is not deployed.
SC-19-95
Aug 13, 2019
110000 ELECTRICAL SYSTEM
The reason for this software update is to update various controllers. All the included Proterra Catalyst E2 vehicles require a change to the software/configuration for the following items: Battery Pack Software, Charge Controller, ESM Softw
SB-19-32
Jul 17, 2019
170000 LATCHES/LOCKS/LINKAGES
The brackets and latches holding the lid on the 35ft Catalyst E2 clamshell covering rooftop components can come loose, possibly causing the lid to open. An open lid on a moving vehicle could become damaged or in an extreme case disconnected
SB-19-32
Jul 17, 2019
160000 STRUCTURE
The brackets and latches holding the lid on the 35ft Catalyst E2 clamshell covering rooftop components can come loose, possibly causing the lid to open. An open lid on a moving vehicle could become damaged or in an extreme case disconnected
SC-19-58
Jul 11, 2019
110000 ELECTRICAL SYSTEM
Voltage sags are causing the datalogger to reset, losing data used for monitoring and servicing the vehicles. Proterra issued this service bulletin to add a diode that will prevent voltage sags and loss of data.
SC-19-84
Jul 10, 2019
110000 ELECTRICAL SYSTEM
Pin placement in the dash DMUXK connector was incorrect and caused the ICAN network to be improperly terminated. Proterra issued this service bulletin to relocate the pin to properly terminate the ICAN network.
SC-19-72
Jul 10, 2019
170000 LATCHES/LOCKS/LINKAGES
The brackets and latches on 40ft Catalyst buses holding the lid on the clamshell covering rooftop components can come loose, possibly causing the lid to open. An open lid on a moving vehicle could become damaged or in an extreme case discon
SC-19-72
Jul 10, 2019
160000 STRUCTURE
The brackets and latches on 40ft Catalyst buses holding the lid on the clamshell covering rooftop components can come loose, possibly causing the lid to open. An open lid on a moving vehicle could become damaged or in an extreme case discon
SC-19-82
Jul 3, 2019
110000 ELECTRICAL SYSTEM
A software error was causing a false state of charge calculation, shutting off the DC to DC converter, causing the low voltage batteries to lose charge. Loss of power to the low voltage battery could cause ancillary systems in the vehicle t
SC-19-69
Jun 12, 2019
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
This procedure changes the wiring for the radiator for improved reliability.
SC-19-69
Jun 12, 2019
110000 ELECTRICAL SYSTEM
This procedure changes the wiring for the radiator for improved reliability.
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