2017 Nissan Versa Note
Mileage
116,271
Service Date
12/17/2024
Services Performed
- Connected a scan tool and found code P0101 – Mass or Volume Air Flow "A" Circuit Range/Performance. At idle, used the scan tool to monitor the live data and found the mass airflow (MAF) sensor parameter was below specifications. Snapped the throttle while the MAF sensor was monitored on the scan tool and observed the MAF sensor did not increase to the specified range. Inspected the air inlet tube and the air intake system for leaks, but found no obvious faults. Using a smoke machine, induced smoke into the intake system to check for leaks, but no leaks were detected. Removed the MAF sensor for inspection, visually inspected the sensor's sensing element and found no obvious faults. Inspected the MAF sensor harness and connector and found no visible faults. Key on, used a multi-meter to check for the presence of the reference voltage and the signal ground and found both were present. At idle, backprobed the MAF sensor signal wire and monitored the sensor signal on a lab scope. Snapped the throttle and observed the MAF sensor signal was below the specification and did not increase at the specified rate. With the engine idling, monitored the MAF sensor on the scan tool, wiggled the MAF sensor and the engine wiring harnesses and observed no change in the MAF sensor parameter. The results of these tests verified the MAF sensor was faulty.
- REMOVE ALL NECESSARY COMPONENTS. REMOVE AND REPLACE MASS AIR FLOW SENSOR AS WELL AS THE ENGINE AIR FILTER. ASSEMBLE TOGETHER AND MAKE ALL NECESSARY ADJUSTMENTS. TEST ALL AFFECTED AREAS.
DALE F. gave our service a 5 star review on 12/17/2024
