P1102 - Mass Air Flow Sensor In Range But Lower Than Expected

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

P1102 Possible Causes

  • Faulty mass air flow sensor
  • Dirty mass air flow sensor
  • Dirty mass air filter
  • Mass air flow sensor harness is open or shorted
  • Mass air flow sensor circuit poor electrical connection
  • Intake air leaks

How do I fix code P1102

    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.

P1102 Tech Notes

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or 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 P1102 code

    Labor: 1.0

    The cost of diagnosing the P1102 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 P1102 code detected?

A voltage from the sensor is constantly approx. 1.0V when engine is running.

P1102 Possible Symptoms

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

P1102 Meaning

The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).

The temperature of the hot film is controlled by the ECM acertain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.
OBDII Code P1102 - Mass Air Flow Sensor In Range But Lower Than Expected - Engine-Codes.com

P1102 More Information

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P1102 Information for specific makes

  • P1102 AUDI HO2S Heating Circuit Bank 1 Sensor 1 Short to B+
  • P1102 CHRYSLER Viscous/Cabin Heater Relay Circuit Condition
  • P1102 DODGE Viscous/Cabin Heater Relay Circuit Condition
  • P1102 FORD Mass Air Flow Sensor In Range But Lower Than Expected
  • P1102 HYUNDAI Manifold Absolute Pressure Sensor Malfunction - Low Voltage
  • P1102 INFINITI Mass Air Flow Sensor Circuit Range/Performance
  • P1102 JEEP Viscous/Cabin Heater Relay Circuit Condition
  • P1102 LAND-ROVER Throttle Position To Mass Air Flow Plausibility Not Active
  • P1102 LINCOLN Mass Air Flow Sensor In Range But Lower Than Expected
  • P1102 MAZDA MAF inconsistent with TP sensor
  • P1102 MERCURY Mass Air Flow Sensor In Range But Lower Than Expected
  • P1102 MITSUBISHI Ventilation Control Solenoid Valve System- Traction Control System
  • P1102 NISSAN Mass Air Flow Sensor Circuit Range/Performance
  • P1102 SUBARU Pressure Sources Solenoid Valve Circuit Malfunction
  • P1102 VOLKSWAGEN HO2S Heating Circuit Bank 1 Sensor 1 Short to B+

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