- #2011 NISSAN ALTIMA MASS AIR FLOW SENSOR PROBLEMS HOW TO#
- #2011 NISSAN ALTIMA MASS AIR FLOW SENSOR PROBLEMS CODE#
See: Evaporative Vapor Pressure Sensor > Removal and Replacement > Removal And Installation. NO- Replace EVAP control system pressure sensor.
#2011 NISSAN ALTIMA MASS AIR FLOW SENSOR PROBLEMS CODE#
See: A L L Diagnostic Trouble Codes ( DTC ) > P Code Charts > EVAP Control System Pressure Sensor For USA And Canada. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR See: Air Cleaner Housing > Removal and Replacement > Removal And Installation.Ĩ. NO- Replace mass air flow sensor (with intake air temperature sensor). See: A L L Diagnostic Trouble Codes ( DTC ) > P Code Charts > IAT Sensor For USA And Canada. Also check harness for short to ground and short to power. Check the continuity between MAF sensor harness connector and ECM harness connector.Ģ. CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORTġ. NO- Repair open circuit or short to ground or short to power in harness or connectors.Ħ. Check the continuity between MAF sensor harness connector and ECM harness connector.Ĥ. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORTģ. Repair open circuit or short to ground or short to power in harness or connectors.ĥ. Harness for open or short between mass air flow sensor and IPDM E/R Harness for open or short between mass air flow sensor and ECM Check the voltage between MAF sensor harness connector and ground. Disconnect mass air flow (MAF) sensor harness connector.ģ. Refer to Ground Inspection in See: Vehicle > Initial Inspection and Diagnostic Overview > Circuit Inspection.ġ. Intake air passage between air duct and intake manifoldĢ. Keep the accelerator pedal as steady as possible during cruising. The gear must be fixed while driving the vehicle. Drive the vehicle for at least 5 seconds under the following conditions: Start engine and warm it up to normal operating temperature.Ģ. Turn ignition switch OFF and wait at least 10 seconds.ġ. Turn ignition switch OFF and wait at least 10 seconds.ģ. If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.ġ. If DTC P0101 is displayed with other DTC, first perform the trouble diagnosis for other DTC. The ECM detects the air flow by means of this current change. Therefore, the electric current supplied to hot wire is changed to maintain the temperature of the hot wire as air flow increases. The heat generated by the hot wire is reduced as the intake air flows around it. The mass air flow sensor controls the temperature of the hot wire to a certain amount. It measures the intake flow rate by measuring a part of the entire intake flow. The mass air flow sensor (1) is placed in the stream of intake air. I realize these are extensive, but if the reprogram didn't help, the problem is something different. The attached pictures correlate with these directions. Since you already reprogrammed the computer per the technical service bulletin, I need you to go through an extensive diagnostic procedure.
#2011 NISSAN ALTIMA MASS AIR FLOW SENSOR PROBLEMS HOW TO#
YouTube - How to Know if a Mass Air Flow Sensor Is Bad If any of the above testing is not within specifications, replace the MAF sensor, clear codes and recheck. With a DVOM at terminal 58 (MAF signal) of the ECM, check the voltage values at the given conditions in the following table. With a capable scan tool monitor the MAF sensor and look for the following values:Ĥ. Start the engine and warm to operating temperature and check for any vacuum leaks in the air induction system after the MAF sensor. If not, proceed with normal troubleshooting.Ģ. Check the referenced TSB, step 6, to see if the vehicle you have is included in the procedure. HINT: If other DTCs are displayed with P0101, diagnose and repair those first.ġ. SUMMARY: P0101-MAF Sensor Circuit Range/Performance Problem The mass air flow sensor (1) is placed in the stream of intake air. RELATED VEHICLES: 2011-2012 Altima 2.5L, 3.5L Cube 1.8L Frontier 4.0L Maxima 3.5L Pathfinder 4.0L, 5.6L Sentra 2.0L Xterra 4.0L There is a TSB for the 101 and I posted it below. Can you post a picture of the sensor you have? I want to be sure we are talking about the same thing.Ī mass air flow sensor does not have a vacuum line.