Engine-CodesJeep – P2004 Jeep

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

Quick Answer

The P2004 diagnostic trouble code for Jeep vehicles specifically relates to the Intake Manifold Runner Control (IMRC) system being stuck open on Bank 1. Common causes include Faulty IMRC actuator, Damaged IMRC solenoid, Wiring 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 Jeep indicates Intake Manifold Runner Control Stuck Open Bank 1.
Common causes
Common causes include Faulty IMRC actuator, Damaged IMRC solenoid, Wiring 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.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P2004 Jeep Description

The P2004 diagnostic trouble code for Jeep vehicles specifically relates to the Intake Manifold Runner Control (IMRC) system being stuck open on Bank 1. The IMRC system is responsible for controlling the intake manifold runner length to optimize engine performance at different RPM ranges. When the IMRC is stuck open, it means that the intake manifold runner is not able to adjust its length as needed, which can result in decreased engine performance, reduced fuel efficiency, and potential damage to the engine over time.

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

Common Causes of P2004 Jeep

  1. Faulty IMRC actuator
  2. Damaged IMRC solenoid
  3. Wiring issues
  4. Vacuum leak in the IMRC system

Symptoms of P2004 Jeep

  1. Reduced power output
  2. Rough idling
  3. Poor acceleration
  4. Decreased fuel economy
  5. Engine misfires

How to Fix P2004 Jeep

  1. Perform a comprehensive diagnostic scan to confirm the P2004 code and pinpoint the exact cause of the issue.
  2. Inspect the IMRC actuator and solenoid for any signs of damage or wear, and replace if necessary.
  3. Check the wiring connected to the IMRC system for any fraying or disconnection, and repair as needed.
  4. Conduct a smoke test to identify any vacuum leaks in the IMRC system and address them accordingly.
  5. Clear the diagnostic trouble code from the vehicle's system and test drive to ensure the issue has been resolved.

Cost to Fix P2004 Jeep

The typical repair costs for addressing a P2004 code can range from $200 to $500, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes both parts and labor. However, it is important to note that diagnosis time and labor rates can vary between auto repair shops, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. It is recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.

Tech Notes for P2004 Jeep





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When is the Code Detected?

The Powertrain Control Module (PCM) detects that the position feedback of the manifold flow valve position sensor is not within range of adapted value learned during inplant initialization or after volatile memory reset.

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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 P2004 Jeep Code

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Discuss the causes and fixes for P2004 Jeep OBDII Code

  • I have a 2008 Jeep Patriot Limited, with a 5 speed manual transmission and 2.4L fuel injected engine. Check engine light comes on, codes displayed are P0171, P0420, and P2004. Can you suggest remedy?