P0101 on Nissan vehicles The mass air flow sensor is reporting a figure the engine computer does not believe for the conditions

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

Bulletins and campaigns Nissan filed with NHTSA whose summary names P0101. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• NTB19-045 Service bulletin
  2019-06-14 · Equipment
• MIL ON WITH DTC P0087, P0101, P0448, OR P2008 IF YOU CONFIRM An applied vehicle has a stored DTC shown in Table A on the next page, AND The ECM part number is shown in Table B, starting on page 3. ACTION First, perform the appropriate diagnostic procedure for the stored code to repair the vehicle according to the Electronic Service Manual (ESM), AND Reprogram the ECM after performing the
• NTB19-045a Service bulletin
  2019-09-19 · Electrical System
• MIL ON WITH DTC P0087, P0101, P0448, OR P2008 This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
• P9328_P9343_P934 Service bulletin
  2019-12-17 · Engine And Engine Cooling
• Engine Control Module (ECM) Reprogram California Voluntary Emissions Service Campaign ***** Campaign Summary***** Nissan is conducting a Voluntary Emissions Service Campaign on approximately 104,221 specific Nissan vehicles identified in Service Comm and currently registered to owners in the state of California to reprogram the Engine Control Module (ECM) in the event that a permanent diagnos
• NTB16-030 Service bulletin
  2016-03-23 · Electrical System — Software
• 2016 ALTIMA; MIL ON WITH DTC P0101 IF YOU CONFIRM The MIL is ON with DTC P0101 (MAF SEN/CIRCUIT-B1) stored, and There are no drivability issues. ACTION 1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on. 2. If this bulletin applies, reprogram the ECM. NOTE: If this bulletin does apply (the ECM needs to be reprogrammed), DO NOT r
• NTB16-030a Service bulletin
  2016-12-01 · Engine
• 2013-2016 ALTIMA WITH QR25DE ENGINE; MIL ON WITH DTC P0101 This bulletin applies only to models equipped with 4-cylinder engines. This bulletin has been amended throughout. Discard all previous versions of this bulletin.
• NTB20-013 Service bulletin
  2020-02-26 · Electrical System
• KICKS; NO START/DRIVABILITY ISSUES, BATTERY LIGHT ON, AND/OR MIL ON DURING FREEZING TEMPERATURES IF YOU CONFIRM One or a combination of the following during temperatures below -10°C/14°F and ice is found inside the PCV hose or PCV valve:  - The engine hesitates or stops running.  - The starter cranks the engine normally but the engine will not start.  - The MIL is ON with DTC P2004 (TUMB
• NTB21-049 Service bulletin
  2021-06-08 · Electrical System
• MIL ON WITH DTC P0101 AND/OR P0507 STORED IN THE ECM IF YOU CONFIRM The MIL is ON and DTC P0101 (MAF SENSOR) and/or P0507 (ISC SYSTEM) is stored in the ECM. ACTION 1. Test the vehicle's 12 volt battery using the Midtronics DSS-5000. Recharge or replace the battery if necessary. 2. Erase all DTCs. 3. Perform Idle Air Volume Learning (IAVL).
• NTB18-084 Service bulletin
  2018-12-13 · Engine
• 2017-2018 ROGUE SPORT; REDUCED POWER DUE TO SNOW INGESTION IF YOU CONFIRM - An Applied Vehicle experiences reduced power during extremely heavy snow fall, And - Snow is found inside the air cleaner case. NOTE: The MIL may be ON with DTC P0101 (MAF SEN/CIRCUIT B1) stored. ACTION 1. Remove the front grille spacer. 2. Install foam blocks listed in the Parts Information. 3. Install the new
• NTB19-045b Service bulletin
  2020-01-08 · Equipment — Other — Owners/Service/Other Manual
• MIL ON WITH DTC P0087, P0101, P0448, OR P2008, VEHICLES REGISTERED OUTSIDE OF CALIFORNIA This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
• NTB16-027c Service bulletin
  2017-07-17 · Equipment Adaptive/Mobility
• 2013 ? 2017 SENTRA; MIL ON WITH DTC P0101 This bulletin applies to non-Turbo equipped vehicles. This bulletin has been amended. CLAIMS INFORMATION has been revised. No other changes have been made. Discard all previous versions of this bulletin.
• NTB16-027d Service bulletin
  2018-05-25 · Equipment
• 2013 ? 2018 SENTRA; MIL ON WITH DTC P0101 This bulletin has been amended. The APPLIED VEHICLES section and Table A have been revised. No other changes have been made. Please discard all previous versions of this bulletin.
• NTB20-056 Service bulletin
  2020-08-04 · Equipment
• MIL ON WITH P0101 STORED IF YOU CONFIRM The MIL is ON and DTC P0101 (MAF SEN/CIRCUIT-B1) is stored in the ECM, AND There are no drivability concerns.

A stored code names the test that failed, never the part that caused it. The record above is what Nissan and its owners have filed about it; the code’s page across every make has the whole file.