Check Nissan DTCs Before Replacement January 23, 2023 Information courtesy of Mitchell 1 No Comments This bulletin applies to 2015-2018 Nissan Altima L33 and 2019 L34 vehicles. If the MIL is on and DTC P219A (air fuel ration imbalance B1) and/or P219B (air fuel ratio imbalance B2) is stored, do not replace the air fuel ratio (A/F) sensor. Read More