Engine-Codes - Generic - P2079

P2079 Code - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent

- Code Popularity: 14,546 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2079?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Intake Manifold Tuning Valve Position Sensor/Switch
  • Intake Manifold Tuning Valve Position Sensor/Switch harness is open or shorted
  • Intake Manifold Tuning Valve Position Sensor/Switch circuit poor electrical connection
  • Faulty Intake Manifold Tuning Valve (IMTV)
  • Faulty Intake Manifold Runner Control (IMRC)
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P2079?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2079 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P2079 Code Mean?

The Intake Manifold Tuning Valve (IMTV) is a motorized actuated unit mounted directly to the intake manifold. The IMTV actuator controls a shutter device attached to the actuator shaft. There is no monitor input to the Powertrain Control Module (PCM) with this system to indicate shutter position.
The motorized IMTV unit will not be energized below approximately 2600 rpm or higher on some vehicles. The shutter will be in the closed position not allowing airflow blend to occur in the intake manifold. Above approximately 2600 rpm or higher, the motorized unit will be energized. The motorized unit will be commanded on by the PCM initially at a 100 percent duty cycle to move the shutter to the open position and then falling to approximately 50 percent to continue to hold the shutter open.
The Intake Manifold Tuning Valve (IMTV) system is monitored for failure during continuous, Key ON Engine OFF (KOEO), or Key ON Engine Running (KOER) self-tests. The test fails when the signal is more or less than an expected calibrated range.

P2079 Code - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent

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Code P2079 Information for Specific Makes

  • P2079 Dodge Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent
  • P2079 Ford Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent
  • P2079 Lincoln Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent
  • P2079 Mercury Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent

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