Engine-Codes - Ford - P1101 1999 FORD F150

P1101 1999 FORD F150 - Mass Air Flow Sensor Out of Self-Test Range

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?

P1101 1999 FORD F150 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 1999 FORD F150

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.

Tech Notes

The MAF sensor circuit is monitored by the 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.

Cost of diagnosing the P1101 1999 FORD F150 code

Labor: 1.0

The cost of diagnosing the P1101 1999 FORD F150 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 code detected?

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

Possible Symptoms

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

P1101 1999 FORD F150 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.

P1101 1999 FORD F150 More Information

Need more information on how to fix the P1101 1999 FORD F150 code?
Get Access to Factory Service Manuals

Need more help?

Get the P1101 1999 Ford F150 code diagnosed by a professional: Find a repair shop in your area