[SOLVED] P1078 Code: Fix High Rpm With Intake Manifold Runner Control System

Are you wondering what the automobile fault code P1078 means? Well, when you see the Engine Light ON or the Service Engine Soon Warning Light, it could be indicating a problem with the Intake Manifold Runner Control (IMRC) Valve.

This fault code may be triggered by a faulty IMRC Valve, an open or shorted IMRC Valve harness, or a poor electrical connection in the IMRC Valve circuit. To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Look out for broken, bent, pushed out, or corroded connector pins.

The repair time for this problem is estimated to be around 1.0.

So, if you encounter this fault code, make sure to address it promptly to avoid any further complications.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1078 fault code.

  • The symptoms of the automobile fault code P1078 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1078 can be caused by a faulty Intake Manifold Runner Control (IMRC) Valve, an open or shorted IMRC Valve harness, or a poor electrical connection in the IMRC Valve circuit.

  • The fault code P1078 can be caused by a faulty Intake Manifold Runner Control (IMRC) Valve, an open or shorted IMRC Valve harness, or a poor electrical connection in the IMRC Valve circuit.

To fix the automobile fault code p1078, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1078, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors for any damage.
  • Look for broken, bent, pushed out, or corroded pins in the connectors.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the diagnosis and fixing cost of automobile fault code p1078 are the estimated repair time of 1.0 hour and the average hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P1078 fault code indicates a malfunction in the Intake Manifold Runner Control (IMRC) system at high engine RPM.

The IMRC valve plays a crucial role in regulating engine power by controlling the intake manifold’s opening and closing.

When the valve is closed, it generates high torque at low engine speed, while an open valve provides high torque at high engine speed.

However, when the IMRC system malfunctions at high RPM, it can lead to issues with engine performance and efficiency. It is important to address this fault code promptly to ensure optimal engine operation.

What are the possible causes of the automobile fault code P1078?

If you see the engine light on or the service engine soon warning light, the fault code P1078 could be the culprit. This code is often caused by a faulty intake manifold runner control (IMRC) valve or issues with the IMRC valve harness, such as an open or shorted circuit. To fix the problem, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the P1078 fault code?

To fix the P1078 fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This can help identify if the issue lies with a faulty Intake Manifold Runner Control (IMRC) Valve or if there is an open or shorted circuit in the IMRC Valve harness. Take a close look to ensure a proper electrical connection.

What should I look for when checking for damaged components or corroded connector pins to resolve the P1078 fault code?

When resolving the P1078 fault code, start by checking for damaged components or corroded connector pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any signs of damage such as broken, bent, pushed out, or corroded pins. By addressing these issues, you can effectively fix the problem and prevent further complications.

p1078 error fault code explained

If your engine light is on, it could be due to a faulty Intake Manifold Runner Control (IMRC) Valve or issues with the IMRC Valve harness. To fix this, visually inspect the wiring harness and connectors for any damage. Check for broken, bent, pushed out, or corroded connector pins.

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