P2012 OBD-II Trouble Code: Intake Manifold Runner Control (IMRC)Circuit Low Bank 2

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2012 code

P2012 is a diagnostic trouble code (DTC) for "Intake Manifold Runner Control (IMRC)Circuit Low Bank 2". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $99.99 . Once we are able to diagnose the problem, you will 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 our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $99.99 $20.0
Toyota $99.99 $20.0
BMW $109.99 $20.0
SCHEDULE P2012 DIAGNOSTIC Get a fair and transparent estimate upfront

P2012 code definition

Intake Manifold Runner Control (IMRC) Circuit Low Bank 2

Related Trouble Codes:

  • P2004: IMRC Stuck Open Bank 1
  • P2005: IMRC Stuck Open Bank 2
  • P2006: IMRC Stuck Closed Bank 1
  • P2007: IMRC Stuck Closed Bank 2
  • P2008: IMRC Circuit Open Bank 1
  • P2009: IMRC Circuit Low Bank 1
  • P2010: IMRC Circuit High Bank 1
  • P2011: IMRC Circuit Open Bank 2
  • P2013: IMRC Circuit High Bank 2
  • P2014: Intake Manifold Runner Pos Sensor/Switch Circ Bank 1
  • P2015: Intake Manifold Runner Pos Sensor/Switch Circ Range/Perf Bank 1
  • P2016: Intake Manifold Runner Pos Sensor/Switch Circ Low Bank 1
  • P2017: Intake Manifold Runner Pos Sensor/Switch Circ High Bank 1
  • P2018: Intake Manifold Runner Pos Sensor/Switch Circ Interm Bank 1
  • P2019: Intake Manifold Runner Pos Sensor/Switch Circ Bank 2
  • P2020: Intake Manifold Runner Pos Sensor/Switch Cir Range/Perf Bank 2
  • P2021: Intake Manifold Runner Pos Sensor/Switch Circ Low Bank 2
  • P2022: Intake Manifold Runner Pos Sensor/Switch Circ High Bank 2
  • P2023: Intake Manifold Runner Pos Sensor/Switch Circ Interm Bank 2

What the P2012 code means

The P2012 diagnostic trouble code indicates that there is an issue with the intake manifold runner control (IMRC) circuit in Bank 2.

The purpose of the IMRC is to regulate the amount of airflow that is permitted into the intake system, using information it has received from the Powertrain Control Module (PCM) regarding current driving conditions. This improves the fuel/air mixture, and reduces harmful emissions. The IMRC has a vacuum actuator, electric solenoid, butterfly valve plates, air passageways to each cylinder, linkage rods connected to the intake manifold butterfly plate lever, and return springs that hold the butterfly valve plates open. The IMRC butterfly valve plates, that look like flaps, open and close to allow or restrict airflow into the intake. The PCM uses information it receives from the IMRC, mass airflow (MAF) sensor and barometric (BARO) sensor to make a determination as to the proper position of the IMRC butterfly valve plates. The IMRC butterfly valves will open at higher speeds/higher RPM, and close at lower speeds/lower RPM. If voltage readings from the IMRC solenoid, MAF sensor, and/or BARO sensor demonstrate that the butterfly valve plates are not in the proper position, the PCM will store the P2012 trouble code.

What causes the P2012 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 disconnected from the IMRC actuator
  • Vacuum control solenoid vacuum filter that is clogged
  • Debris in the vacuum control solenoid
  • Vacuum lines that are disconnected or broken
  • Carbon buildup on the IMRC butterfly valve plates
  • Exhaust Gas Recirculation (EGR) valve trouble codes that have been stored by the PCM
  • MAF sensor trouble codes that have been stored by the PCM
  • BARO sensor trouble codes that have been stored by the PCM

What are the symptoms of the P2012 code?

  • Decrease in fuel economy
  • Decrease in low end engine torque
  • The engine may surge/sputter
  • The vehicle will run rough
  • Check Engine/Service Engine Soon Light on
  • Check Engine/Service Engine Soon light flashing

How does a mechanic diagnose the P2012 code?

  • Uses an OBD-II scanner to collect freeze frame data and any trouble codes that have been stored by the PCM (if trouble codes for the EGR valve, MAF sensor, and/or BARO sensor have been stored by the PCM, they should be diagnosed and repaired first)
  • Completes a visual inspection of all wiring for shorts, breaks, and frays
  • Repairs or replaces any wiring that has shorted, is frayed, or broken
  • Completes a visual inspection of the IMRC solenoid for corrosion and damage
  • Repairs or replaces any of the connectors that are corroded or damaged
  • Inspects the vacuum lines and hoses
  • Repairs or replaces any of the vacuum lines or hoses that are loose or damaged
  • Inspects the IMRC butterfly valve plates for proper connection and/or breaks
  • Inspects the EGR valve for excessive carbon buildup (this carbon buildup could get onto the IMRC solenoid and render it defective)
  • Clears the codes and retests to see if the P2012 trouble code returns
  • Uses the scan tool to test the IMRC solenoid:

Open and close the IMRC solenoid using the scanner. If the IMRC solenoid does not respond, the solenoid will need to be replaced.

Common mistakes when diagnosing the P2012 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 P2012 trouble code.

How serious is the P2012 code?

If the IMRC butterfly valve plate hardware are loose and fall off into the engine, this could cause severe internal engine damage. For this reason this code is considered serious. It should be addressed as soon as possible.

What repairs can fix the P2012 code?

  • Replacing the IMRC solenoid
  • Repairing or replacing IMRC solenoid wiring that is 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 assembly will need to be replaced)

If EGR valve, MAF sensor, and/or BARO trouble codes are present, diagnose and repair.

Additional comments for consideration regarding the P2012 code

Be sure to check the connection of the IMRC butterfly valve plates to the IMRC actuator. If there is a loose connection, this is a simple and quick fix to resolve this trouble code. Also, it is common for carbon buildup to form on the IMRC, which causes poor operation. However, this happens inside the intake and can not be seen. Without having the all of the necessary tools to diagnose this trouble code, it will be necessary to replace the entire intake assembly.

*Need help with a P2012 code? *

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

Check Engine Light
trouble codes
P2012

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P2012 code.

SCHEDULE P2012 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(6529)

Rating Summary
6050
228
53
36
162
6050
228
53
36
162
 at YourMechanic

Kevin

24 years of experience
449 reviews
Kevin
24 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Stone Mountain, Georgia
He is a very knowledgeable Mechanic, and told me where exactly to get my exhaust leak fix. Very honest and thorough Mechanic.
 at YourMechanic

Raymond

27 years of experience
144 reviews
Raymond
27 years of experience
Chevrolet Suburban 1500 - Check Engine Light is on - Apple Valley, California
Raymond is an excellent mechanic, I feel he is very honest and trustworthy. I would recommend him to everyone.
 at YourMechanic

Diana

18 years of experience
46 reviews
Diana
18 years of experience
Ford Escape V6-3.0L - Check Engine Light is on - Union, New Jersey
Fantastic service. Super knowledgeable and courteous. Something you don't get in the brick and mortar shops. A+++++++++
 at YourMechanic

Rusty

23 years of experience
462 reviews
Rusty
23 years of experience
Audi A4 L4-2.0L - Check Engine Light is on - Fort Worth, Texas
Rusty was knowledgeable, friendly, and helpful. He took the time to talk with me about my car and the various repair options I should consider. Highly recommended, and would use him again with high confidence.


Related questions

Gas reset button location

Hello. Diagnostic trouble code P1631 is an indication that the theft deterrent password is incorrect. The theft deterrent feature for your vehicle will shut off the fuel to your car until the proper password is sent to the PCM. A...

More related articles

P2535 OBD-II Trouble Code: Ignition Switch Run/Start Position Circuit High
P2535 code means the voltage to your vehicle’s fuel delivery and ignition systems is low due to burned fuses, links, or wiring or bad alternator.
P2047 OBD-II Trouble Code: Reductant Injector Circuit/Open Bank 1 Unit 1
P2047 P2047 trouble code definition The P2047 code is a general OBD2 trouble code that points to a fault within the reductant injector circuit. What the P2047 code means The P2047 code means a fault is present in the reductant...
P0315 OBD-II Trouble Code: Crankshaft Position System Variation Not Learned
Trouble code P0315 means the crankshaft position system has a fault, often caused by faulty wiring or corroded sensor connector.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com