Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,196 bulletins for CUMMINS
TSB210055-110320
Nov 3, 2022
090000 FUEL SYSTEM, OTHER
This Technical Service Bulletin describes the verification and resolution of a stuck intake air throttle due to the formation of ice in cold ambient conditions. This condition may cause actual position to not meet commanded in cold ambient
C2640
Nov 3, 2022
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
This In-Shop campaign is being issued to address excessive output gear wear leading to the replacement of the intake air throttle. This In-Shop campaign authorizes certified repair locations to download and install a new ECM calibration. Th
TSB220216-110120
Nov 1, 2022
030000 BRAKES (PWS)
This Technical Service Bulletin describes melted downpipe blanket. Melted insulation panels from hot exhaust exhaust gas leaking inside enclosure. Root Cause: Assembly issue putting pressure on the exhaust bellow causing it to crack
TSB220219-102820
Oct 28, 2022
280000 BACK OVER PREVENTION
This Technical Service Bulletin describes the verification and resolution of Description of Change: An aftertreatment intake NOx sensor part number is being released for service. Reason for Change: This is a product improvement change that
SB_406
Oct 6, 2022
060000 ENGINE AND ENGINE COOLING
This latest revision is to address the issue in the context of supply chain shortages. Identify options for dealing with multiple failure mode codes on various versions of DEF headers for 2016 and newer Cummins engines.
TSB220192-092920
Sep 29, 2022
100000 POWER TRAIN
This Technical Servicel bulletin was issued for Fault Code 1117. Fault Code 1117 detects when the ECM did not have enough time to finish writing data before losing power. FC1117 will immediately go inactive at a normal engine start up. FC1
TSB220198-092720
Sep 27, 2022
060000 ENGINE AND ENGINE COOLING
This document informs the field of a change to the dimensions of the Acumen mounting bracket (PN A064F386). The new mounting brackets will have the following dimensions to ensure that its stud placements align with the Acumen device mountin
ATC2630
Sep 22, 2022
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
This ATC is being issued to address potential fuel shutoff valve failures on certain ISX12N CM2380 X120B engines. This document authorizes Cummins certified locations to replace fuel shutoff valve part number 5537854 or 5467826 with an imp
ATC2599
Sep 22, 2022
060000 ENGINE AND ENGINE COOLING
This ATC is being issued to address the backside idler bracket failures in certain L9 CM2350 116B engines in refuse truck applications for Miami Dade. This ATC authorizes certified repair locations to remove the rubber damper and install a
C2420
Sep 22, 2022
061600 ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
This campaign is being issued to recalibrate the Engine Control Module (ECM) on certain MY2017 - 2019, L9 CM2350 engines in Series Parallel Hybrid bus applications with Allison Transmission systems. This campaign enables authorized repair l
C2418
Sep 22, 2022
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
This Emission Campaign is being issued to recalibrate the Engine Control Module (ECM) on certain 2013-2016 ISB6.7 engines in Series-Parallel Hybrid Bus applications with Allison Transmission system. The campaign enables authorized repair lo
TSB220195-092220
Sep 22, 2022
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin has been issued for Coolant Level Sensor Identification. Symptom: There can be two coolant level sensors (typically on the Bus Applications) that are related to the coolant level sensor. One coolant level sen
CMI-09212022-A
Sep 21, 2022
060000 ENGINE AND ENGINE COOLING
RMEP used up the Engine Serial Number (ESN) range between 73X ?74999999 and the ESNs at RMEP started using the 7500XXXX range.This range is already assigned to engines built from another Cummins Plant in 2011
TSB220193-092020
Sep 20, 2022
063140 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
This Technical Service Bulletin has been issued for Freightliner Aftertreatment Intake NOx Sensor Incorrectly Installed. Symptoms can be Fault Code 1885 or 6461; Check engine light and exhaust leak; Unit has low miles; Noisy exhaust leak.
TSB220194-091920
Sep 19, 2022
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin was issued for reducing occurrences of Fault code 197. Symptoms could be Audible coolant level warning; Light on screen with ?Low Coolant Level? message; Active or inactive Fault Code 197. Root Cause: Coolan
TSB210127-090920
Sep 9, 2022
030000 SERVICE BRAKES, HYDRAULIC
This Technical Service Bulletin describes the verification and resolution of misfire fault codes without any audible misfire or performance loss (false misfire). This can be caused by aftermarket exhaust gas pressure sensors not providing e
TSB220181-090820
Sep 8, 2022
063130 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
This Technical Service Bulletin describes the verification and resolution of New Exhaust Gas Recirculation (EGR) Cooler allowing a more robust EGR cooler as a result of a new tube header change.
C2607
Sep 6, 2022
060000 ENGINE AND ENGINE COOLING
This Campaign is being issued for field action to authorize certified repair locations to replace the engine dataplate on certain MY21 L9N engines. The current dataplate carries incorrect AP options. A new dataplate with the corrected AP op
TSB220182
Aug 30, 2022
030000 SERVICE BRAKES, HYDRAULIC
This Technical Service Bulletin describes the correct service replacement part number for the engine oil pressure switch.
TSB220180
Aug 29, 2022
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the Generator set derate where the circuit breaker inside heater control box exceeds its temperature limit and trips. A revised version of the heater control box Part Number 0300-5898 has been rele
TSB220179
Aug 26, 2022
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes when the NPBU Diagnostics electronic service tool is connected to the unit while driving, the system can overheat.
TSB220149
Aug 26, 2022
050000 PARKING BRAKE
This Technical Service Bulletin describes the verification and resolution of loose or missing trailer bolts found on generator sets. This is an update to a previously submitted communication.
TSB220177
Aug 23, 2022
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin accounces the introduction of new injector grommet seal for valve cover options for VC 9532, 9697, 9789, 9592, 9614, 9894, 9898, 9895, 9899, 9896, 9900, 9897, 9901to eliminate the lubricating oil leaks observ
TSB220059
Aug 19, 2022
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes Fault Code 3838, malfunctioning internal components within the fan controller jumper harness
TSB220175
Aug 18, 2022
110000 ELECTRICAL SYSTEM
This Technical Service Bulletin describes three RS-485 flying lead wires on the Acumen wire harness, part number A064Z009, are mislabeled. If the three flying leads are not correctly labeled per Acumen Remote Monitoring System - Owner manu