P2004 is a diagnostic trouble password (DTC) because that "Intake Manifold Runner regulate Stuck Open bank 1". This can happen for lot of reasons and also a mechanic needs to diagnose the particular cause because that this code to be triggered in your situation. Our certified mobile mechanics can pertained to your home or office to perform theCheck Engine light diagnosticfor $114.99. When we room able come diagnose the problem, you will certainly be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by ours 12-month / 12,000-mile warranty.
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P2004 password definition
Intake Manifold Runner manage (IMRC) grounding Open financial institution 1
Related trouble Codes:P2005: IMRC stuck Open bank 2P2006: IMRC grounding Closed bank 1P2007: IMRC stuck Closed financial institution 2P2008: IMRC Circuit Open bank 1P2009: IMRC Circuit Low financial institution 1P2010: IMRC Circuit High bank 1P2011: IMRC Circuit Open financial institution 2P2012: IMRC Circuit Low bank 2P2013: IMRC Circuit High bank 2P2014: input Manifold Runner position Sensor/Switch Circuit bank 1P2015: input Manifold Runner position Sensor/Switch Circuit Range/Perf financial institution 1P2016: entry Manifold Runner position Sensor/Switch Circuit Low financial institution 1P2017: intake Manifold Runner position Sensor/Switch Circuit High bank 1P2018: input Manifold Runner place Sensor/Switch Circuit Interm bank 1P2019: entry Manifold Runner position Sensor/Switch Circuit bank 2P2020: input Manifold Runner position Sensor/Switch Circuit Range/Perf bank 2P2021: entry Manifold Runner place Sensor/Switch Circuit Low bank 2P2022: intake Manifold Runner place Sensor/Switch Circuit High bank 2P2023: intake Manifold Runner position Sensor/Switch Circuit Interm financial institution 2
What the P2004 code means
The P2004 diagnostic problem code indicates that the intake manifold runner control (IMRC) is stuck in the open up position on bank 1.
The Powertrain manage Module (PCM) offers the IMRC with information relating to present driving conditions, and also the IMRC offers this information to regulate the amount of air flow that is permitted right into the intake system. By regulation intake airflow, harmful emissions are reduced, the air/fuel mixture is improved, and also fuel economy is increased.
The contents of the IMRC include:vacuum actuator electric solenoidbutterfly valve platesair passageways to every cylinderlinkage rods linked to the entry manifold butterfly plate levelreturn springs that hold the butterfly valve plates open up
The PCM receives details from the IMRC solenoid, mass air flow (MAF) sensor, and barometric (BARO) sensor to make a determination regarding the appropriate position that the IMRC butterfly valve plates. The plates then open and close to allow or restrict wait from entering right into the entry system.
At high speeds/RPM, the IMRC butterfly valve plates will open up to enable the circulation of air right into the input system, and at low speeds/RPM, the IMRC butterfly valve plates will close come restrict the circulation of air right into the entry system. If the PCM determines the voltage analysis from the IMRC solenoid, MAF sensor, and also BARO sensor show that the IMRC butterfly valve plates are not in the appropriate position, the will keep the P2004 problem code.
What causes the P2004 code?IMRC solenoid the is defectiveIMRC solenoid wiring that has shorts, breaks, or is frayed.IMRC solenoid circuitry that has actually shorted or is openIMRC solenoid connector that is corrodedIMRC butterfly valve bowl screws that are loose or brokenIMRC butterfly valve bowl that room brokenIMRC butterfly valves key that have actually disconnected from the IMRC actuatorVacuum manage solenoid vacuum filter that is cloggedDebris in the vacuum regulate solenoidVacuum present that are disconnected or brokenCarbon buildup ~ above the IMRC butterfly valve platesExhaust gas recirculation (EGR) valve trouble codes that have actually been stored by the PCMMAF sensor trouble codes that have actually been save on computer by the PCMBARO sensor problem codes that have been save on computer by the PCM
What are the symptoms of the P2004 code?Decrease in fuel economyDecrease in low finish engine torqueThe engine might surge/sputterThe car will run roughCheck Engine/Service Engine shortly Light onCheck Engine/Service Engine quickly Light flashing
How go a mechanic diagnose the P2004 code?Uses an OBD-II scanner to collect freeze structure data and also any trouble codes that have actually been save by the PCM (if problem codes for the EGR valve, MAF sensor, and/or BARO sensor have actually been save on computer by the PCM, they must be diagnosed and also repaired first)Completes a intuitive inspection of all wiring because that shorts, breaks, and also fraysRepairs or replaces any shorted, frayed, or broken wiringCompletes a visual inspection of the IMRC solenoid because that corrosion and also damageRepairs or replaces any type of corroded or damaged connectorsInspects the vacuum lines and also hosesRepairs or replace instead replace any loose or damaged vacuum currently or hoses Inspects the IMRC butterfly valve bowl for proper connection and/or breaksInspects the EGR valve for too much carbon buildup (this carbon buildup can get ~ above the IMRC solenoid and render it defective)Clears the codes and also retests to watch if the P2004 trouble code returnsUses the scan tool to check the IMRC solenoid:
Open and close the IMRC solenoid making use of the scanner. If the IMRC solenoid does no respond, the solenoid will have to be replaced.
Common mistakes when diagnosing the P2004 codeMisdiagnosing and also replacing the IMRC solenoidMisdiagnosing and replacing the IMRC butterfly valve platesOverlooking damaged or disconnected vacuum linesOverlooking IMRC solenoid connector and wiringReplacing the IMRC butterfly valve plates as soon as the trouble was that they to be not linked properlyNeglecting to diagnose and also repair other EGR valve, MAF sensor, and/or BARO trouble codes prior to making any repairs because that the P2004 problem code.
How significant is the P2004 code?
The P2004 trouble password may end up being serious if the hardware for the IMRC butterfly valve bowl become loosened and autumn off right into the engine. If this happens, severe engine damage is possible, and also could potentially cause engine failure. That is vital to have the P2004 trouble password inspected and repaired as soon as possible.
What repairs can fix the P2004 code?Replacing the IMRC solenoidRepairing or replacing IMRC solenoid wiring that has actually shorts, division or is frayedRepairing or replacing IMRC solenoid circuitry that has actually shorted or is openRepairing or replacing IMRC solenoid connector the is corroded.Repairing and/or instead of IMRC butterfly valve plate hardware, if necessaryRepairing or replacing loosened or damaged vacuum linesReplacing IMRC butterfly valve bowl (in bespeak to do this, the input manifold assembly will have to be replaced)Diagnosing and also repairing EGR valve, MAF sensor, and/or BARO problem codes, if present
Additional comments because that consideration concerning the P2004 code
The PCM might store the P2004 trouble password if the IMRC butterfly valve plates become detached from the IMRC actuator. This code may be resolved conveniently by check the connection of the IMRC butterfly valve plates and the IMRC actuator.
It is additionally common for the PCM to store the P2004 problem code because carbon buildup in the input is leading to the IMRC butterfly valve plates to end up being stuck.
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