P1104 - MAP Sensor Low Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3   
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P1104 Possible Causes

  • Faulty Manifold Absolute Pressure (MAP)
  • Manifold Absolute Pressure (MAP) harness is open or shorted
  • Manifold Absolute Pressure (MAP) circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

First diagnose P1104 code

    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.

Cost of diagnosing the P1104 code

    Labor: 1.0

    The cost of diagnosing the P1104 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P1104 Possible Symptoms

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

P1104 Description

The Manifold Absolute Pressure (MAP) sensor provides instantaneous manifold pressure information to the engine's Engine Control Module (ECM). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion. A fuel-injected engine may alternately use a Mass Air Flow (MAF) sensor to detect the intake airflow. A typical configuration employs one or the other, but seldom both.The MAP/BARO Switch solenoid valve switches it's air flow passage according to the voltage signal sent from the ECM.
OBDII Code P1104 - MAP Sensor Low Voltage - AutoCodes.com

P1104 More Information

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P1104 Information for specific makes

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