If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the P2079 fault code. This code indicates a problem with the Intake Manifold Tuning Valve Position SensorSwitch, which can be caused by a faulty sensor, poor electrical connection, or a damaged wiring harness. It’s important to address this issue promptly as it can affect the engine’s performance and fuel efficiency.

The repair difficulty is moderate, and it’s recommended to visually inspect the wiring harness and connectors for any damage or corrosion.

The repair time is estimated at 1.0 hour.

To interpret the fault code, check the “Possible Causes” listed above and look for any damaged components.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON or Service Engine Soon Warning Light, it could be a sign of p2079 fault code. Here are the symptoms to look out for:

  • The P2079 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include a decrease in engine power, rough idling, stalling, and poor acceleration.
  • Additionally, the vehicle may experience misfires, reduced fuel efficiency, and difficulty starting.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

P2079 fault code can be caused by various issues, including faulty sensors, poor electrical connections, and malfunctioning control modules.

  • The automobile fault code P2079 can be caused by a faulty Intake Manifold Tuning Valve Position Sensor/Switch.
  • It can also be caused by an open or shorted harness of the Intake Manifold Tuning Valve Position Sensor/Switch.
  • A poor electrical connection in the Intake Manifold Tuning Valve Position Sensor/Switch circuit can also trigger the fault code.
  • Another cause is a faulty Intake Manifold Tuning Valve (IMTV).
  • A faulty Intake Manifold Runner Control (IMRC) can also cause the fault code.
  • Lastly, a faulty Powertrain Control Module (PCM) can trigger the P2079 fault code.

To fix the p2079 automobile fault code, check the possible causes and inspect the related wiring harness and connectors for any damage or corrosion.

  • To fix the automobile fault code p2079, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P2079 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the repair time, which is commonly charged between $75 and $150 per hour by most auto repair shops. Therefore, the total cost of diagnosis and fixing the P2079 fault code will depend on the hourly rate charged by the repair shop and the estimated repair time required to fix the issue.

The P2079 code relates to the Intake Manifold Tuning Valve (IMTV) system. The IMTV is a motorized actuated unit mounted directly to the intake manifold.

The IMTV actuator controls a shutter device attached to the actuator shaft. The code indicates an intermittent issue with the IMTV position sensorswitch circuit.

The 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.

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.

What are the possible causes of the P2079 fault code in an automobile?

If the engine light is on and the P2079 fault code is detected, it could be due to a faulty Intake Manifold Tuning Valve Position Sensor/Switch, open or shorted harness, poor electrical connection, faulty Intake Manifold Tuning Valve (IMTV), faulty Intake Manifold Runner Control (IMRC), or faulty Powertrain Control Module (PCM). To fix the issue, inspect the wiring harness and connectors for any damage or corrosion and check for broken or bent pins.

How can one visually inspect the wiring harness and connectors related to the P2079 fault code?

If you’re experiencing the P2079 fault code, which causes the engine light to turn on, you can visually inspect the related wiring harness and connectors to fix the issue. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. It’s important to check the “Possible Causes” listed above and ensure that the Intake Manifold Tuning Valve Position Sensor/Switch harness is not open or shorted, and that the Intake Manifold Tuning Valve (IMTV), Intake Manifold Runner Control (IMRC), and Powertrain Control Module (PCM) are not faulty.

Is it necessary to replace the Intake Manifold Tuning Valve (IMTV) or Intake Manifold Runner Control (IMRC) to fix the P2079 fault code?

It is not necessary to replace the Intake Manifold Tuning Valve (IMTV) or Intake Manifold Runner Control (IMRC) to fix the P2079 fault code. The first step is to check the possible causes listed above, visually inspect the related wiring harness and connectors, and look for damaged components and connector pins.

p2079 error fault code explained

If your engine light is on and you have a P2079 fault code, check the intake manifold tuning valve position sensorswitch, harness, and circuit for any issues. Also, inspect the IMTV, IMRC, and PCM for faults. Visually inspect the wiring harness and connectors for any damage or corrosion.

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