2018 PROTERRA CATALYST
9 recalls, 0 complaints - 55 TSBs
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.
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
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.
19V402000 May 30, 2019
SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
Defect Description
Proterra, Inc. (Proterra) is recalling certain 2017-2018 Catalyst buses. The vehicles are equipped with swivel valves that may insufficiently protect the air brake system from an air leak between the service reservoir and the source of air pressure. As such, these vehicles fail to comply with the r... Read more
Consequence
If the swivel valves are unable to protect the air brake system against loss of air pressure, this may lead to service brake failure and the possibility for the uncontrolled application of the safety brake. Either condition increases the risk of crash.
Remedy
Proterra will notify owners, and will replace the swivel valve with a check valve that is sufficient to protect the air brake system, free of charge. The recall began July 26, 2019. Owners may contact Proterra customer service at 1-864-438-0000.
19V283000 Apr 9, 2019
SERVICE BRAKES
Defect Description
Proterra, Inc. (Proterra) is recalling certain 2015-2018 Catalyst 40 buses equipped with an optional tow fitting and airline that allows a tow truck to operate the rear brakes on the vehicle. The mesh cap covering the airline for the tow fitting can be clogged with road debris in inclement weather,... Read more
Consequence
A build up of air pressure can cause the brakes to drag and possibly overheat, increasing the risk of fire.
Remedy
Proterra will notify owners, and dealers will install an additional shield to the tow fitting that protects the mesh cap, free of charge. The recall began June 4, 2019. Owners may contact Proterra customer service at 1-864-438-0000.
19V062000 Jan 30, 2019
SUSPENSION:FRONT
Defect Description
Proterra Inc., (Proterra) is recalling certain 2015-2018 Catalyst 40 and 35 transit buses. The affected vehicles are equipped with a four point height control system that may cause a load imbalance, overloading the front tires.
Consequence
An overloaded front tire may fail unexpectedly, increasing the risk of crash.
Remedy
Proterra will notify owners, and dealers will convert the current four point ride height system into a three point system to prevent the front tires from being overloaded, free of charge. The recall began March 26, 2019. Owners may contact Proterra customer service at 1-864-438-0000.
19V061000 Jan 29, 2019
SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK
Defect Description
Proterra Inc., (Proterra) is recalling certain 2015-2018 Catalyst 40 transit buses. The affected vehicles lack a Graham White air brake supply reservoir, possibly resulting in long term moisture build up in the air brake system. As a result, these vehicles fail to comply with Federal Motor Vehicle ... Read more
Consequence
Built-up of moisture in the air brake system may lead to brake failure, increasing the risk of crash.
Remedy
Proterra will notify owners, and dealers will install a supply reservoir with a drain between the air dryer and the air supply manifold, free of charge. The recall is expected to begin March 28, 2019. Owners may contact Proterra customer service at 1-864-438-0000.
19V034000 Jan 16, 2019
EQUIPMENT:OTHER:LABELS
Defect Description
Proterra, Inc is recalling certain 2015-2018 Catalyst 40, and Catalyst 35 buses. The certification label may list an incorrect gross front axle weight rating and/or incorrect tire pressures. As such, these vehicles fail to comply with the requirements of 49 CFR Part 567, "Certification."
Consequence
If the tire pressure is understated, an underinflated tire may result in an increased risk of tire failure, increasing the risk of a crash.
Remedy
Proterra will notify owners, and dealers will replace the certification labels with correct information for all affected customers, free of charge. The recall began March 12, 2019. Owners may contact Proterra customer service at 1-864-438-0000.
No complaints found for this vehicle.
Technical Service Bulletins, 2018 PROTERRA CATALYST
55 manufacturer communications from 32 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 110000 ELECTRICAL SYSTEM | 18 |
| 350000 EQUIPMENT | 11 |
| 160000 STRUCTURE | 4 |
| 356000 EQUIPMENT ADAPTIVE/MOBILITY | 4 |
| 010000 STEERING | 3 |
| 062000 ENGINE AND ENGINE COOLING:COOLING SYSTEM | 2 |
| 170000 LATCHES/LOCKS/LINKAGES | 2 |
| 100000 POWER TRAIN | 1 |
SC-20-025
Sep 23, 2020
114005 ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
This procedure is a updates the rooftop battery thermal management system unit brackets to a more robust design.
SC-20-025
Sep 23, 2020
160000 STRUCTURE
This procedure is a updates the rooftop battery thermal management system unit brackets to a more robust design.
SC-20-079
Aug 6, 2020
119200 ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR
This retrofit changes the traction motor inverter enable signal from 12 to 24 volts to improve reliability.
SC-20-079
Aug 6, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
This retrofit changes the traction motor inverter enable signal from 12 to 24 volts to improve reliability.
SC-20-079
Aug 6, 2020
350000 EQUIPMENT
This retrofit changes the traction motor inverter enable signal from 12 to 24 volts to improve reliability.
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-20-074
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
356000 EQUIPMENT ADAPTIVE/MOBILITY
This retrofit adds reflective tape to the front of the bus to comply with California state regulations.
SC-20-083
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-20-083
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-20-084
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-19-62
Apr 28, 2020
220000 SEATS
This procedure upgrades the rear flip up seat mount to a more robust design.
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.
SC-19-102
Aug 16, 2019
160000 STRUCTURE
This retrofit removes the 5-Position door switch and replaces it with individual front and rear door switches.
SC-19-102
Aug 16, 2019
110000 ELECTRICAL SYSTEM
This retrofit removes the 5-Position door switch and replaces it with individual front and rear door switches.
SC-19-97
Aug 14, 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-19-87
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
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
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
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
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-19-72
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
SB-19-02
Jul 3, 2019
010000 STEERING
Due to a wiring harness change, the cord grip on the power steering motor is the wrong size, which could allow water to leak into the motor wiring junction box, causing the power steering motor to stop working. Proterra issued this service
SB-19-02
Jul 3, 2019
110000 ELECTRICAL SYSTEM
Due to a wiring harness change, the cord grip on the power steering motor is the wrong size, which could allow water to leak into the motor wiring junction box, causing the power steering motor to stop working. Proterra issued this service
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
110000 ELECTRICAL SYSTEM
This procedure changes the wiring for the radiator for improved reliability.
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.
SB-18-95
May 29, 2019
110000 ELECTRICAL SYSTEM
This procedure will replace current Air Compressor and Power Steering Variable Frequency Drive EMI Filter with one of more robust design.
SC-19-67
May 28, 2019
110000 ELECTRICAL SYSTEM
This procedure relocates the auxiliary air tank pressure transducer and provides additional grounding for the rear air tank bracket.
SC-19-40
May 14, 2019
120000 EXTERIOR LIGHTING
This procedure will upgrade the rear clearance lights to improved energy efficiency and increased longevity of the lights.
SC-19-52
May 9, 2019
110000 ELECTRICAL SYSTEM
This retrofit installs a diode in series with the datalogger power input to prevent voltage sags from resetting the datalogger.
SC-19-61
May 7, 2019
350000 EQUIPMENT
This updates the datalogger firmware to the latest version for improved communication.
SB-18-86
Apr 25, 2019
010000 STEERING
This procedure will replace current Air Compressor and Power Steering Variable Frequency Drive EMI Filter with one of more robust design.
SB-18-86
Apr 25, 2019
100000 POWER TRAIN
This procedure will replace current Air Compressor and Power Steering Variable Frequency Drive EMI Filter with one of more robust design.
SB-18-86
Apr 25, 2019
350000 EQUIPMENT
This procedure will replace current Air Compressor and Power Steering Variable Frequency Drive EMI Filter with one of more robust design.
SC-19-70
Apr 20, 2019
350000 EQUIPMENT
This procedure adds clips to the inverter three phase wiring to reduce EMI.
SC-19-70
Apr 20, 2019
114000 ELECTRICAL SYSTEM:WIRING
This procedure adds clips to the inverter three phase wiring to reduce EMI.
SC-19-70
Apr 20, 2019
356000 EQUIPMENT ADAPTIVE/MOBILITY
This procedure adds clips to the inverter three phase wiring to reduce EMI.
SC-19-65
Apr 16, 2019
357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
This procedure provides improved grounding for the HVAC unit.
SC-19-65
Apr 16, 2019
110000 ELECTRICAL SYSTEM
This procedure provides improved grounding for the HVAC unit.
SB-19-19
Apr 12, 2019
350000 EQUIPMENT
This procedure checks and adjusts the front-end geometry and steering alignment for optimum performance.
SB-19-19
Apr 12, 2019
200000 WHEELS
This procedure checks and adjusts the front-end geometry and steering alignment for optimum performance.
SB-19-19
Apr 12, 2019
010000 STEERING
This procedure checks and adjusts the front-end geometry and steering alignment for optimum performance.
SB-18-96
Apr 11, 2019
350000 EQUIPMENT
This procedure will modify the 5 Position Door Switch Bracket to make it index properly with the text labels on the switch panel
SB-18-96
Apr 11, 2019
110000 ELECTRICAL SYSTEM
This procedure will modify the 5 Position Door Switch Bracket to make it index properly with the text labels on the switch panel
SB-19-25
Apr 10, 2019
350000 EQUIPMENT
This retrofit installs Michelin Tires 315/80R22.5 on the axles of the bus and relocates the front ABS Modulator Valves to accommodate the wider tires.
SB-19-25
Apr 10, 2019
190000 TIRES
This retrofit installs Michelin Tires 315/80R22.5 on the axles of the bus and relocates the front ABS Modulator Valves to accommodate the wider tires.
SB-18-09
Mar 27, 2019
110000 ELECTRICAL SYSTEM
This Technical Service Bulletin updates the vehicle Magnetek. This change will bring the vehicle up to the latest version of Magnetek software and improve charging performance by adding functionality for buses used at multi-charge station s
SC-19-35
Mar 14, 2019
110000 ELECTRICAL SYSTEM
This Technical Service Bulletin updates the software/configuration on the Catalyst E2 Vehicle controllers including the CCS Charger Controller, Dash, Powertrain Controller, Body Controller, and ESM. The bulletins referenced in SC-19-35's n
SB-18-74
Feb 14, 2019
020000 SUSPENSION
Technical Service Bulletin Front Axle Control Arm Retrofit (RL75EC to RL82EC) was issued to replace the Control Arms on the front axle to allow a higher front axle weight.
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