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P2004 Toyota Code - Intake Manifold Runner Control Stuck Open Bank 1

Quick Answer

The P2004 diagnostic trouble code for Toyota vehicles indicates that the intake manifold runner control (IMRC) for bank 1 is stuck open. Common causes include Faulty intake manifold runner control actuator, Carbon buildup in the intake manifold runner, Wiring or electrical issues. 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
P2004 Toyota indicates Intake Manifold Runner Control Stuck Open Bank 1.
Common causes
Common causes include Faulty intake manifold runner control actuator, Carbon buildup in the intake manifold runner, Wiring or electrical issues.
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 Sep 06, 2024
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Code P2004 Toyota Description

The P2004 diagnostic trouble code for Toyota vehicles indicates that the intake manifold runner control (IMRC) for bank 1 is stuck open. The intake manifold runner control is responsible for adjusting the length of the intake manifold runners to optimize airflow and increase engine performance at different RPMs. When the control is stuck open, it can lead to a variety of issues affecting the vehicle's performance.

OBDII Code P2004 Toyota - Intake Manifold Runner Control Stuck Open Bank 1
P2004 Toyota Code - Intake Manifold Runner Control Stuck Open Bank 1

Common Causes of P2004 Toyota

  1. Faulty intake manifold runner control actuator
  2. Carbon buildup in the intake manifold runner
  3. Wiring or electrical issues
  4. Vacuum leaks in the intake system
  5. Mechanical failure in the intake manifold runner system

Symptoms of P2004 Toyota

  1. Decreased engine performance and power
  2. Rough idle or stalling
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated
  5. Engine misfires

How to Fix P2004 Toyota

  1. Diagnose the issue using a scan tool to confirm the P2004 code and pinpoint the specific cause.
  2. Inspect the intake manifold runner control actuator for proper operation and replace if necessary.
  3. Clean out any carbon buildup in the intake manifold runner.
  4. Check and repair any wiring or electrical issues related to the IMRC system.
  5. Inspect for vacuum leaks and repair or replace any damaged components.

Cost to Fix P2004 Toyota

The cost of repairing the intake manifold runner control stuck open issue can vary depending on the specific cause and the labor rates at the auto repair shop. On average, the parts for this repair can range from $100 to $300, while labor costs can add another $150 to $300. Overall, the total repair cost for this issue may fall between $250 and $600. It's recommended to contact local auto repair shops for accurate pricing based on your vehicle's make and model.

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Information for Specific Toyota Models

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.

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