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Model year

2017 Proterra Catalyst

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recalls (8)Complaints (0)Investigations (1)Bulletins (41)
Recall campaigns covering this model year81,821 vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2017 Proterra Catalyst by year filed

Owner complaints about this model year, by the year they were filed with NHTSA.

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Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

Complaints by component

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

No campaigns match these filters.Reset filters
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

8 recall campaigns cover the 2017 Proterra Catalyst

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2017 Proterra Catalyst
CampaignFiledSubjectComponentVehiclesRemedy
22V-887Nov 30, 2022One or more battery packs may allow liquid to leak into and accumulate in the battery pack enclosureElectrical system300Software update
22V-114Feb 28, 2022Plexus adhesive between the torque limiter plate and the bus body may be insufficient, causing the bolts that secure the steering gearbox to loosenSteering724Repair or modification
19V-402May 30, 2019Vehicles are equipped with swivel valves that may insufficiently protect the air brake system from an air leak between the service reservoir and…Brakes147Part replacement
19V-283Apr 9, 2019Mesh cap covering the airline for the tow fitting can be clogged with road debris in inclement weather, possibly resulting in a build up of air…Brakes39Repair or modification
19V-062Jan 30, 2019Affected vehicles are equipped with a four point height control system that may cause a load imbalance, overloading the front tiresSuspension310Not stated
19V-061Jan 29, 2019Affected vehicles lack a Graham White air brake supply reservoir, possibly resulting in long term moisture build up in the air brake systemBrakes55Repair or modification
19V-034Jan 16, 2019Certification label may list an incorrect gross front axle weight rating and/or incorrect tire pressuresEquipment184Part replacement
18V-750Oct 23, 2018Surface roughness of a guide pin in the radial brake calipers may cause the brake carriage guide pin support bolt to breakBrakes62Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2017 Proterra Catalyst

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    1 NHTSA investigation on file

    • RQ25001 Recall query, Electrical system
      Remedy Effectiveness of Recall 22V887
      Opened Jun 27, 2025, still open
    Source: NHTSA ODI investigations file.
    All investigations
    Service bulletins

    41 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

    • SC-20-076 Nov 1, 2022 · Service Bulletin/Repair Instructions
      Transit bus repair to the electrical cabinet behind the drivers area. This bulletin updates the bracketry to be more robust in this area.
    • SC-20-085 Oct 7, 2020 · Service Bulletin/Repair Instructions
      Transit bus repair to the side windows due to water ingress between window and body.
    • SC-20-097 Jun 22, 2021 · Service Bulletin/Repair Instructions
      Transit bus repair for the gas struts on the wheel well box to no locking struts. The locking struts to the wheel well compartment were failing due to user error and not unlocking the strut prior to closing the compartment..
    • SC-20-109 Apr 28, 2021 · Service Bulletin/Repair Instructions
      Transit bus repair to the exterior compartment panels to include a larger latch catch to support tolerance difference.
    • SC-20-127 Mar 9, 2021 · Service Bulletin/Repair Instructions
      Transit bus repair to the air dryer governor switch due to the original not performing as well with the environmental expose.
    • SC-20-168 Dec 22, 2020 · Service Bulletin/Repair Instructions
      Transit bus repair instruction for the charge blade on the roof of the bus to supplement the repair manual to ensure connections have not come loose.
    • SC-20-174 Nov 30, 2021 · Service Bulletin/Repair Instructions
      Transit bus to the vehicles electrical and software due to the odometer losing mileage.
    • SC-21-034 Sep 21, 2021 · Service Bulletin/Repair Instructions
      Transit bus repair to the air compressor, the previous banjo fitting was prone to leaking, the solid drain plug prevents compressor from losing oil.
    • SC-21-040 Jul 21, 2021 · Service Bulletin/Repair Instructions
      Transit bus repair to the coolant system in which a bleed line is potentially allow for aeration of the coolant. Procedure caps off this line.
    • SC-21-042 Jun 24, 2022 · Service Bulletin/Repair Instructions
      Transit bus update to the air in take of the air compressor to support the compressor getting clean air into the unit to increase reliability.
    • SC-21-045 Mar 18, 2021 · Service Bulletin/Repair Instructions
      Transit bus torque verification on the intermediate steering shaft.
    • SC-21-048 Aug 30, 2021 · Service Bulletin/Repair Instructions
      Transit bus fleet check to inspect the steering gearboxes and replace hardware.
    • SC-21-056 May 20, 2021 · Service Bulletin/Repair Instructions
      Transit bus repair to the HVAC, the supply air temperature sensor is being replaced to improved sealed sensor provided by our HVAC OEM. The sensor failure prevents the HVAC from running.
    • SC-21-183 Jan 27, 2022 · Service Bulletin/Repair Instructions
      Transit bus repair instructions to install a drain in the cavity where the ADA ramp sits.
    • FC-22-046 Apr 22, 2022 · Service Bulletin/Repair Instructions
      Transit bus quality check on bus bodies not produced by TPI. Inspecting the steering gear bolts to ensure torque strips are intact.
    • SC-22-155 Nov 7, 2022 · Service Bulletin/Repair Instructions
      Repair instructions for transit buses that are not TPI bodies to replace the gearbox fasteners with locking fasteners.
    • SC-21-010 May 12, 2022 · Service Bulletin/Repair Instructions
      Transit bus body composite repair at the rear door if any fiberglass is delaminating.
    • FC-22-075 Jul 22, 2022 · Service Bulletin/Repair Instructions
      Fleet Check/ Repair Instructions for the heavy duty electric transit buses, checking the gap between the Vrod and suspension link bracket.
    • FC-22-167 Jan 10, 2023 · Service Bulletin/Repair Instructions
      Instruction to verify the BTMS chiller panels are assembled correctly, ensuring the hinge pin is secured.
    • FC-23-003 Oct 2, 2023 · Service Bulletin/Repair Instructions
      Repair instruction to inspect heavy duty transit vehicles for humidity in the battery pack and perform preventative maintenance.
    • FC-23-006 Nov 29, 2022 · Service Bulletin/Repair Instructions
      Repair instructions for the telemetry system on the heavy duty transit buses if the system is not reporting.
    • IB-23-032 Oct 6, 2022 · Service Bulletin/Repair Instructions
      Service Bulletin for an alternative coolant temp sensor for transit buses as the original sensor installed is challenging to purchase due to supply constraints.
    • IB-23-132 Feb 20, 2024 · Service Bulletin/Repair Instructions
      Repair instructions to support transit buses when a charge shunt fails. If the installed charge shunt were to fail we can replace with the original shunt installed, therefore this instruction set provides documentation for installing an alternative.
    • SC-22-026 Jul 6, 2023 · Service Bulletin/Repair Instructions
      Service Bulletin for upgraded battery fans on select heavy duty electric buses. Moving to brushless fans to extend the service life of the fans.
    • SC-22-097 Oct 22, 2022 · Service Bulletin/Repair Instructions
      Repair instructions for ADA ramp brackets that have come debonded due to water intrusion.
    • SC-22-150 Apr 4, 2023 · Service Bulletin/Repair Instructions
      Bulletin to add shim under the steering TLP due to build variances of the bodies and bond gaps.
    • SC-20-025 Sep 23, 2020 · Service Bulletin/Repair Instructions
      This procedure is a updates the rooftop battery thermal management system unit brackets to a more robust design.
    • SC-20-079 Aug 6, 2020 · Service Bulletin/Repair Instructions
      This retrofit changes the traction motor inverter enable signal from 12 to 24 volts to improve reliability.
    • SC-20-084 Jul 10, 2020 · Service Bulletin/Repair Instructions
      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-20-074 Jul 10, 2020 · Service Bulletin/Repair Instructions
      This retrofit adds reflective tape to the front of the bus to comply with California state regulations.
    • SC-19-133 Nov 15, 2019 · Service Bulletin/Repair Instructions
      This campaign updates the Grayson battery thermal management system to the latest version for improved performance.
    • SC-19-97 Aug 14, 2019 · Service Bulletin/Repair Instructions
      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 Software, Powertrain C…
    • SC-19-84 Jul 10, 2019 · Service Bulletin/Repair Instructions
      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-19-82 Jul 3, 2019 · Service Bulletin/Repair Instructions
      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 to turn off. Prote…
    • SC-19-72 Jul 10, 2019 · Service Bulletin/Repair Instructions
      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 disconnected, possibly …
    • SC-19-65 Apr 16, 2019 · Service Bulletin/Repair Instructions
      This procedure provides improved grounding for the HVAC unit.
    • SB-18-86 Apr 25, 2019 · Service Bulletin/Repair Instructions
      This procedure will replace current Air Compressor and Power Steering Variable Frequency Drive EMI Filter with one of more robust design.
    • SC-19-35 Mar 14, 2019 · Service Bulletin/Repair Instructions
      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 notice lines are t…
    • SB-18-09 Mar 27, 2019 · Service Bulletin/Repair Instructions
      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 sites and other fu…
    • SB-18-74 Feb 14, 2019 · Service Bulletin/Repair Instructions
      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.
    • SB-19-05 Feb 4, 2019 · Service Bulletin/Repair Instructions
      Technical Service Bulletin Catalyst 40 FC Vehicle Software Update was issued to update the CCS Charger Controller, Drivers Work Place Controller, Powertrain Controller, Body Controller (ZR), and BMC Software to expand the max number of vehicles that can doc…
    Source: NHTSA manufacturer communications files.
    About service bulletins