Engine-Codes.com
Engine-Codes – Acura – P1078 Acura

P1078 Acura Code - Intake Manifold Runner Control System Malfunction High RPM

Quick Answer

The P1078 Acura code indicates a malfunction in the Intake Manifold Runner Control System at high RPMs. Common causes include Faulty Intake Manifold Runner Control Valve, Wiring issues or electrical connections related to the IMRC system, Vacuum leaks in the intake manifold. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1078 Acura indicates Intake Manifold Runner Control System Malfunction High RPM.
Common causes
Common causes include Faulty Intake Manifold Runner Control Valve, Wiring issues or electrical connections related to the IMRC system, Vacuum leaks in the intake manifold.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1078 Acura Description

The P1078 Acura code indicates a malfunction in the Intake Manifold Runner Control System at high RPMs. The Intake Manifold Runner Control (IMRC) system is responsible for optimizing airflow into the engine based on driving conditions. When this system malfunctions, it can affect the vehicle's performance, fuel efficiency, and emissions. The high RPM aspect of the code suggests that the issue occurs under high engine load, potentially impacting acceleration and overall engine power.

OBDII Code P1078 Acura - Intake Manifold Runner Control System Malfunction High RPM
P1078 Acura Code - Intake Manifold Runner Control System Malfunction High RPM

Common Causes of P1078 Acura

  1. Faulty Intake Manifold Runner Control Valve
  2. Wiring issues or electrical connections related to the IMRC system
  3. Vacuum leaks in the intake manifold
  4. Carbon buildup in the intake manifold
  5. Engine control module (ECM) malfunction

Symptoms of P1078 Acura

  1. Rough idling or stalling at high RPMs
  2. Loss of power during acceleration
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated
  5. Engine misfires

How to Fix P1078 Acura

  1. Begin by diagnosing the specific cause of the issue using a scan tool to read the trouble codes and pinpoint the malfunction.
  2. Inspect the Intake Manifold Runner Control Valve for any signs of damage or malfunction. Replace if necessary.
  3. Check the wiring and electrical connections associated with the IMRC system for any faults or corrosion. Repair or replace as needed.
  4. Clean the intake manifold to remove any carbon buildup that may be affecting airflow.
  5. If the issue persists, consider replacing the Engine Control Module (ECM) if it is determined to be faulty.

Cost to Fix P1078 Acura

The cost of repairing a P1078 Acura code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair cost for this type of issue can range from $200 to $600, including parts and labor. However, it's crucial to get an accurate estimate from a qualified mechanic or auto repair shop, as rates can vary significantly. Additionally, the time required for diagnosis and repair can also impact the overall cost.

Need more information about the P1078 Acura code?

Need more information on how to fix the P1078 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1078 Acura code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1078 Acura Code

1. What are common symptoms of OBDII code P1078 in an Acura related to the Intake Manifold Runner Control System?

Symptoms may include rough idling, decreased engine performance, reduced fuel efficiency, and the illumination of the Check Engine light.

2. What are potential causes of the P1078 code in an Acura?

Potential causes include a faulty intake manifold runner control valve, a vacuum leak in the intake system, damaged wiring or connectors, or a malfunctioning PCM (Powertrain Control Module).

3. How can I diagnose the cause of the Intake Manifold Runner Control System malfunction in my Acura?

A thorough inspection of the intake manifold runner control valve, vacuum lines, wiring, and connectors is recommended. Additionally, using an OBDII scanner to retrieve freeze frame data can help pinpoint the issue.

4. Is it safe to continue driving my Acura with the P1078 code present?

It is not recommended to continue driving with the P1078 code present, as it can lead to further engine damage and reduced performance. It is best to address the issue promptly.

5. Can I repair the Intake Manifold Runner Control System malfunction in my Acura myself?

Depending on your mechanical skills and access to tools, you may be able to address simpler causes like a vacuum leak or damaged wiring yourself. However, more complex issues may require professional assistance.

6. How much does it typically cost to repair the P1078 code related to the Intake Manifold Runner Control System in an Acura?

The cost of repair can vary depending on the root cause of the issue. Simple fixes like replacing a faulty valve or repairing a vacuum leak may cost a few hundred dollars, while more extensive repairs could cost upwards of a thousand dollars.

7. Will resetting the Check Engine light make the P1078 code go away permanently?

Resetting the Check Engine light without addressing the underlying issue will not make the P1078 code disappear permanently. The issue must be diagnosed and repaired to prevent the code from returning.

8. Can a clogged intake manifold cause the P1078 code in an Acura?

While a clogged intake manifold may not directly cause the P1078 code, it can contribute to issues with the Intake Manifold Runner Control System, leading to related malfunctions and triggering the code.

9. How long does it typically take to repair the Intake Manifold Runner Control System malfunction in an Acura?

The repair time can vary depending on the specific cause of the issue and the complexity of the repair. Simple fixes may take a few hours, while more involved repairs could take a day or more.

10. Are there any preventive measures to avoid encountering the P1078 code in the future?

Regular maintenance, including checking and cleaning the intake manifold runner control system components, inspecting vacuum lines, and addressing any engine performance issues promptly, can help prevent the recurrence of the P1078 code in the future.

Discuss the causes and fixes for P1078 Acura OBDII Code

Submit a New Comment

Code P1078 Acura comments

No comments found for this page.