How To Fix Intake Manifold Stuck Open Audi A6 2021

P2004 lawmaking definition

Intake Manifold Runner Control (IMRC) Stuck Open Bank 1

Related Trouble Codes:

P2005: IMRC Stuck Open up Bank ii
P2006: IMRC Stuck Closed Bank 1
P2007: IMRC Stuck Closed Bank ii
P2008: IMRC Circuit Open up Bank 1
P2009: IMRC Circuit Low Bank 1
P2010: IMRC Excursion Loftier Bank 1
P2011: IMRC Circuit Open Banking concern 2
P2012: IMRC Circuit Low Depository financial institution two
P2013: IMRC Excursion High Bank ii
P2014: Intake Manifold Runner Position Sensor/Switch Excursion Bank 1
P2015: Intake Manifold Runner Position Sensor/Switch Circuit Range/Perf Bank one
P2016: Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1
P2017: Intake Manifold Runner Position Sensor/Switch Circuit High Banking concern 1
P2018: Intake Manifold Runner Position Sensor/Switch Circuit Interm Banking company ane
P2019: Intake Manifold Runner Position Sensor/Switch Excursion Bank ii
P2020: Intake Manifold Runner Position Sensor/Switch Circuit Range/Perf Bank ii
P2021: Intake Manifold Runner Position Sensor/Switch Excursion Depression Banking company 2
P2022: Intake Manifold Runner Position Sensor/Switch Circuit High Depository financial institution 2
P2023: Intake Manifold Runner Position Sensor/Switch Excursion Interm Bank 2

What the P2004 code means

The P2004 diagnostic problem lawmaking indicates that the intake manifold runner control (IMRC) is stuck in the open position on Bank 1.

The Powertrain Control Module (PCM) provides the IMRC with data relating to current driving conditions, and the IMRC uses this information to regulate the corporeality of airflow that is permitted into the intake system. Past regulating intake airflow, harmful emissions are reduced, the air/fuel mixture is improved, and fuel economy is increased.

The components of the IMRC include:

vacuum actuator
electric solenoid
butterfly valve plates
air passageways to each cylinder
linkage rods connected to the intake manifold butterfly plate level
return springs that hold the butterfly valve plates open

The PCM receives information from the IMRC solenoid, mass airflow (MAF) sensor, and barometric (BARO) sensor to make a determination as to the proper position of the IMRC butterfly valve plates. The plates then open and close to permit or restrict air from entering into the intake system.

At high speeds/RPM, the IMRC butterfly valve plates volition open to permit the menstruation of air into the intake organisation, and at low speeds/RPM, the IMRC butterfly valve plates will close to restrict the flow of air into the intake system. If the PCM determines that voltage reading from the IMRC solenoid, MAF sensor, and BARO sensor indicate that the IMRC butterfly valve plates are not in the proper position, it will store the P2004 trouble code.

What causes the P2004 code?

IMRC solenoid that is defective
IMRC solenoid wiring that has shorts, breaks, or is frayed.
IMRC solenoid circuitry that has shorted or is open
IMRC solenoid connector that is corroded
IMRC butterfly valve plate screws that are loose or broken
IMRC butterfly valve plates that are broken
IMRC butterfly valves plates that have asunder from the IMRC actuator
Vacuum control solenoid vacuum filter that is clogged
Debris in the vacuum control solenoid
Vacuum lines that are asunder or cleaved
Carbon buildup on the IMRC butterfly valve plates
Exhaust gas recirculation (EGR) valve trouble codes that accept been stored by the PCM
MAF sensor problem codes that have been stored past the PCM
BARO sensor trouble codes that take been stored past the PCM

What are the symptoms of the P2004 code?

Decrease in fuel economy
Decrease in low stop engine torque
The engine may surge/sputter
The vehicle will run crude
Check Engine/Service Engine Shortly Calorie-free on
Cheque Engine/Service Engine Soon Calorie-free flashing

How does a mechanic diagnose the P2004 lawmaking?

Uses an OBD-II scanner to collect freeze frame information and whatever trouble codes that have been stored by the PCM (if problem codes for the EGR valve, MAF sensor, and/or BARO sensor take been stored past the PCM, they should exist diagnosed and repaired get-go)
Completes a visual inspection of all wiring for shorts, breaks, and frays
Repairs or replaces whatsoever shorted, frayed, or broken wiring
Completes a visual inspection of the IMRC solenoid for corrosion and harm
Repairs or replaces any corroded or damaged connectors
Inspects the vacuum lines and hoses
Repairs or replaces any loose or damaged vacuum lines or hoses
Inspects the IMRC butterfly valve plates for proper connection and/or breaks
Inspects the EGR valve for excessive carbon buildup (this carbon buildup could go onto the IMRC solenoid and render it defective)
Clears the codes and retests to see if the P2004 trouble code returns
Uses the scan tool to examination the IMRC solenoid:

Open and shut the IMRC solenoid using the scanner. If the IMRC solenoid does non respond, the solenoid will need to be replaced.

Common mistakes when diagnosing the P2004 code

Misdiagnosing and replacing the IMRC solenoid
Misdiagnosing and replacing the IMRC butterfly valve plates
Overlooking damaged or disconnected vacuum lines
Overlooking IMRC solenoid connector and wiring
Replacing the IMRC butterfly valve plates when the problem was that they were not connected properly
Neglecting to diagnose and repair other EGR valve, MAF sensor, and/or BARO trouble codes before making any repairs for the P2004 trouble code.

How serious is the P2004 code?

The P2004 trouble code may become serious if the hardware for the IMRC butterfly valve plates become loose and fall off into the engine. If this happens, astringent engine harm is possible, and could potentially cause engine failure. It is important to have the P2004 trouble code inspected and repaired as soon as possible.

What repairs can fix the P2004 lawmaking?

Replacing the IMRC solenoid
Repairing or replacing IMRC solenoid wiring that has shorts, breaks or is frayed
Repairing or replacing IMRC solenoid circuitry that has shorted or is open
Repairing or replacing IMRC solenoid connector that is corroded.
Repairing and/or replacing IMRC butterfly valve plate hardware, if necessary
Repairing or replacing loose or damaged vacuum lines
Replacing IMRC butterfly valve plates (in order to do this, the intake manifold associates will need to be replaced)
Diagnosing and repairing EGR valve, MAF sensor, and/or BARO problem codes, if present

The PCM may store the P2004 trouble code if the IMRC butterfly valve plates become detached from the IMRC actuator. This code may be resolved quickly by checking the connectedness of the IMRC butterfly valve plates and the IMRC actuator.

Information technology is also mutual for the PCM to shop the P2004 trouble lawmaking because carbon buildup in the intake is causing the IMRC butterfly valve plates to become stuck.

Need help with a P2004 code?

YourMechanic offers certified mechanics who will come to your dwelling or office to diagnose and repair your vehicle. Get a quote and volume an engagement online or speak to a service advisor at 1-800-701-6230.

Cheque Engine Calorie-free

trouble codes

P2004