Engine-Codes - Saab - P0101 SAAB

P0101 SAAB Code - Mass or Volume Air Flow Circuit Range/Performance Problem

- Code Popularity: 1,888 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the P0101 SAAB Code?

  • Dirty Air Filter
  • Dirty Mass Air Flow (MAF) Sensor
  • Intake air leaks
  • Faulty Mass Air Flow Sensor
  • Mass Air Flow Sensor harness is open or shorted
  • Mass Air Flow Sensor circuit poor electrical connection

|How to Fix the P0101 SAAB Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|P0101 SAAB code tech notes

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.

|What is the cost to diagnose the P0101 SAAB code?

Labor: 1.0

The cost to diagnose the P0101 SAAB code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0101 SAAB code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine stall
  • Engine running rough
  • Excessive fuel consumption
  • Excessive smoke

|What Does the P0101 SAAB Code Mean?

This fault code is stored in the engine control module when the output from the mass airflow sensor is not as expected. The mass airflow sensor is used to measure the volume of airflow entering the engine and is located downstream of the air filter. The density of the incoming air can also be measured. Cold air is denser than warm air and has more oxygen present so the engine fueling can be adjusted accordingly. The exhaust gas recirculation system can be monitored using the mass airflow sensor output. If a large volume of exhaust gases is re-circulated, then a reduction in incoming air will take place. When the engine control module activates the exhaust gas recirculation valve a reduction in mass airflow sensor voltage is expected. If this voltage reduction does not occur, then a fault code for exhaust gas recirculation - insufficient flow detected is stored in the engine control module. When the engine control module deactivates the exhaust gas recirculation valve an increase in mass airflow sensor voltage is expected. If this voltage increase does not occur, then a fault code for exhaust gas recirculation - excessive flow detected is stored in the engine control module. Currently, modern vehicles can have an analog output or a digital output from the mass airflow sensor. An oscilloscope can be used to test the signal. A sensor with an analog output will have a voltage that increases with airflow volume. A sensor with a digital output will have a frequency that varies with airflow volume.

Mass or Volume Air Flow Circuit Range/Performance Problem

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