NHTSA Service Bulletin 10174752: 2018 Nissan Altima

QR25 Cylinder Head Voluntary Emission Recall Campaign ***** Campaign Summary ***** Nissan is conducting a Voluntary Emission Recall Campaign on approximately 2,209 specific MY2018 Nissan Rogue (T32) and 5,557 specific MY2018 Altima (L33) 2.5L vehicles identified in Service Comm to inspect the engine identification markings and, if they are from the subject manufacturing lot, the suspect cylinders and spark plugs will be inspected. If necessary, dealers may replace the engine, exhaust manifold catalyst, air fuel (A/F) ratio sensor, and oxygen sensor. A machining issue in the engine may exist, which could allow oil to escape past the valve guides and enter the combustion chamber. If an affected engine is not repaired, the performance of the manifold catalyst could degrade over time and cause exhaust gas emissions to exceed standards at high mileage. This incident has no effect on safety or fuel consumption but may decrease engine performance in rare cases. If Nissan has previously replaced the engine in the vehicle due to this condition, the exhaust manifold catalyst, air fuel (A/F) ratio sensor, and oxygen sensor will be replaced. ***** What Dealers Should Do**** 1. Verify campaign applicability using Service Comm or DBS National Service History Open Campaign I.D. PC716 - Inspect Engine Identification Markings PC717 - Manifold Catalyst Replacement 2. Dealers should use the appropriate campaign bulletin to remedy any vehicles subject to these campaigns: PC716 NTB20-025 PC717 NTB20-027 3. Once repaired, dealers should submit the claim, using the claims coding provided, and release the vehicle.