NOVA BUS issued a recall on the LFS model

On certain buses with Cummins Westport ISL-G engines, excessive engine crankcase pressure could cause the vent tube assembly elbow to detach from the breather. This could allow engine oil to come in contact with hot surfaces, increasing the risk of fire. Excessive engine crankcase pressure may also result in low engine power and cause the engine diagnostic lamps to illuminate. Dealers will install clamps at both ends of the elbow of the breather tube assembly and reprogram the Electronic Control Module (ECM) to improve diagnostic capabilities.