Engine-Codes - Generic - P1078

P1078 - Intake Manifold Runner Control System Malfunction High RPM

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1078 Possible Causes

  • Faulty Intake Manifold Runner Control (IMRC) Valve
  • IMRC Valve harness is open or shorted
  • IMRC Valve circuit poor electrical connection

How is the P1078 code repair?

Start by checking 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.

What is the cost to diagnose the P1078 code

Labor: 1.0

The cost to diagnose the P1078 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P1078 Meaning

Engine power is achieved by closing and opening the Intake Manifold Runner Control (IMRC) valve. When the valve is closed, there is high torque at low engine speed. When the valve is open, there is high torque a high engine speed.

More Information

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Information for specific makes

  • P1078 ACURA Intake Manifold Runner Control System Malfunction High RPM  📷
  • P1078 BMW Valvetronics Actuator Motor Overload
  • P1078 HONDA Intake Manifold Runner Control System Malfunction High RPM  📷
  • P1078 INFINITI Exhaust Valve Timing Control Position Sensor Bank 1 Circuit
  • P1078 MINI Valvetronics Actuator Motor Overload
  • P1078 NISSAN Exhaust Valve Timing Control Position Sensor Bank 1 Circuit

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