Diagnosing Nissan air leak

This bulletin applies to select Nissan Altima, Armada, Frontier, Kicks, Maxima, Murano, Pathfinder, Rogue, Rogue Sport, Sentra, Titan/Titan XD, Versa and Z vehicles.

Mike Mavrigian

Related To:

Mitchell 1

July 29, 2025

If an air leak and/or a loose duct clamp is found, repair the leak and do not replace the MAF sensor. If an air leak and/or a loose duct clamp is not found, perform the MAF component inspection.

This bulletin applies to 2019-2024 Nissan Altima, 2017-2024 Armada, 2022-2024 Frontier, 2018-2024 Kicks, 2016-2023 Maxima, 2015-2024 Murano, 2013-2020 Pathfinder, 2022-2024 Pathfinder, 2021-2024 Rogue, 2017-2022 Rogue Sport, 2020-2024 Sentra, 2016-2024 Titan/Titan XD, 2020-2024 Versa, 2009-2020 370Z and 2023-2024 Z vehicles.

When diagnosing DTC P0101 for “MAF SEN/CIRCUIT-B1” when stored in the ECM:

Inspect the following for any leaks and correct before proceeding:

- Any loose duct clamps at the air cleaner, MAF sensor and electric throttle body actuator.
- An incorrectly installed air filter and air filter cover.
- Damaged air intake components.
- Aftermarket air intake components.

2. Check for any other possible sources of an air leak.

If an air leak and/or a loose duct clamp is found, repair the leak and do not replace the MAF sensor. If an air leak and/or a loose duct clamp is not found, perform the MAF component inspection.

About the Author

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.