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Service bulletins for the 2015 NovaBUS LFS

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

155 on file from NHTSA, as of 2026-10-19.

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By component

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
FT46512023-08-17. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Failure of DEF sensor GEN 6 within the expected 5-years lifespan.
LI5228ER22023-04-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SUMP/TANK. DEF GEN4 tank, tank head and sensor will no longer be available in service
FT52422023-02-25. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. ECP radiator failures deemed to be due to overpressure events.
APS5370E2023-02-24. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. The Delco-Remy alternator is obsolete. Air cooled ductless (Almott) alternator, power cable and hardware kit to replace the Delco-Remy oil-cooled alternator.
LI5228E2022-05-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. DEF tank Head Unit GEN4 N8900882 is no longer available in service, it is replace by the new DEF tank Head Unit GEN5 N8910051
PC1025R32022-02-04. Service bulletin. ENGINE AND ENGINE COOLING. radiator leaking coolant
PC1025R22022-01-03. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS. Radiator leaking coolant
PC1025R12021-11-04. Service bulletin. ENGINE AND ENGINE COOLING. Radiator leaking coolant
PC10252021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Radiator leaking coolant
LI4494E2021-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engine compartment junction block scheduled maintenance. This document is an addendum to Nova Bus Maintenance Manual section 19-401, outlining the need to monitor the condition of junction blocks and correct when required.
LI3978E2021-03-04. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. Information about the engine coolant. Coolant types should not be mixed in the engine.
LI4995E2021-03-04. Service bulletin. ENGINE; ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engine compartment junction block scheduled maintenance. This document is an addendum to Nova Bus Maintenance Manual section 19-401, outlining the need to monitor the condition of junction blocks and correct when required.
Li49982021-02-02. Service bulletin. ENGINE AND ENGINE COOLING. The elbow used on the CAC pipes too short and found a leakage, decided to use the double clamp, it was necessary to use the longer elbow in this area.
FT47812020-01-21. Service bulletin. EQUIPMENT; ENGINE. Engine door Hinge becoming loose
BS4630E2020-01-21. Service bulletin. ENGINE. When Fast idle is active the engine parameter prevents the engine from doing an active regeneration.
FT4566R12019-09-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; ENGINE. Engine Fan Connector hot
LI4642E2019-07-08. Service bulletin. ENGINE AND ENGINE COOLING. Addition of strain relief bracket to secure regulator connections against vibration
BS4334E2019-06-10. Service bulletin. ENGINE AND ENGINE COOLING. Critical low coolant level sensor N84555 may under certain conditions cause a false code of critical low coolant level.
FT45662019-05-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. Engine Fan Connector hot
BS4173ER12018-10-09. Service bulletin. ENGINE AND ENGINE COOLING. The EGS coolant hoses may leak in the baselight above the passenger area.
LI4345E2018-08-20. Service bulletin. ENGINE. Original valve is discontinued
LI4156E2018-06-25. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. The structural integrity of the plastic PEX fittings may be affected if coated with liquid and/or lubricant, which may lead to coolant leaking into the passenger compartment.
LI4200E2018-03-12. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL. This is a product improvement campaign that is being issued to recaliberate the ECM and upfit with improved Selective Catalyst Reduction (SCR) component of the Cummins Engine(s).
LI4263ER12018-03-12. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE. Subject to application and duty cycle, DEF dosing valve can clog up and cause engine to derate, stall, lose power and log FC3568. Increasing dosing valve and DEF hose angle can help reduce such occurrence. Vehicles reporting repetitive FC3568 can be modified according to procedure herein.
BS4173E2018-02-12. Service bulletin. ENGINE AND ENGINE COOLING. The EGS coolant hoses may leak in the baselight above the passenger area.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.