P1101 - Mass Air Flow Sensor Out of Self-Test Range

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What does this mean?

P1101 Possible Causes

  • Faulty Mass Air Flow Sensor
  • Air leak before or after sensor
  • Mass Air Flow Sensor harness is open or shorted
  • Mass Air Flow Sensor circuit poor electrical connection

How do I fix code P1101

    Check 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.

P1101 Tech Notes

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

Cost of diagnosing the P1101 code

    Labor: 1.0

    The cost of diagnosing the P1101 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the P1101 code detected?

The Engine Control Module (ECM) detected a Mass Air Flow (MAF) sensor signal above or below calibrated limit

P1101 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1101 Meaning

The Mass Air Flow (MAF sensor circuit is monitored by the Powertrain Control Module (PCM) for an out of range air flow (or voltage) input. If during key ON engine OFF the air flow voltage signal is greater than 0.27 volts the test fails. Likewise, if during key ON engine running, an air flow voltage signal is not within 0.46 volt to 2.44 volts, the test fails.
OBDII Code P1101 - Mass Air Flow Sensor Out of Self-Test Range - Engine-Codes.com

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