This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.
Definition
P2006 is an OBD-II Code that refers to Intake Manifold Runner Control Stuck Closed Bank 1
Meaning
A P2006 code is a generic diagnostic trouble code that occurs when the PCM/ECM detects a signal that the intake manifold runner control circuit is stuck closed intake runner flap for bank 1. When a fault is identified, the ECU attempts to keep the intake manifold runner flap in position. A Check Engine Light is turned on when this fails.
The automobile enters a failsafe condition in addition to the Check Engine Light and it will remain in place until the fault has been addressed or regular operation resumes.
Causes
Common causes for this code include:
- The intake manifold runner control actuator may have failed
- In the IMRC solenoid control circuit, there may be open or shorted wiring
- The IMRC flaps or intake manifold ports may develop carbon deposits over time
- Bad MAP Sensor
- Vacuum lines are restricted
- PCM failure
Symptoms
The symptoms of a P2006 code are:
- The Check Engine Light will come on
- Exhaust fumes are diminished
- Stumbles upon acceleration
- Fuel efficiency is affected
- Engine surge
Diagnosis
To diagnose a P2006 DTC code, a technician would:
- Scan for codes in the ECM and look at the freeze frame data for failure.
- Start by checking the electrical wiring and connectors in the IMRC control circuit.
- Inspect the IMRC actuator for signs of damage.
- Check the vacuum lines for restrictions.
- Test the MAP sensor.
- Replace the PCM if all other tests have been unsuccessful.
Common mistakes
The following are some of the most common mistakes that a technician may make when diagnosing a P2006 code:
- Not thoroughly inspecting the wiring and connectors in the IMRC control circuit.
- Not inspecting the actuator for damage.
- Not checking the vacuum lines for restrictions.
- Testing the MAP sensor with an incorrect voltage.
- Replacing the PCM unnecessarily when other tests have not been successful.
How serious is this?
A P2006 code is considered to be a quite a nuisance as it can cause a diminished exhaust, engine stumble, and loss in fuel efficiency. However, it can also cause long-term damage to the engine if left too long.
What repairs can fix the code?
The following are solutions that may fix this problem:
- Repair or replace any faulty parts such as the IMRC actuator, wiring, or sensors.
- Clean the intake manifold runner control flaps and ports.
- Restore proper vacuum to the system.
- Replace the PCM if all other solutions have been unsuccessful.
Related codes
A P2006 is related to and may be accompanied by the following codes:
P2005 – Intake Manifold Runner Control Stuck Open Bank 1
P2007 – Intake Manifold Runner Control Circuit Malfunction
P2008 – Intake Manifold Runner Control Circuit Range/Performance
Conclusion
In conclusion, the P2006 code is a diagnostic trouble code that refers to a problem with the intake manifold runner control circuit. There are several possible causes and symptoms of this code, which can be diagnosed and repaired with the help of a technician. The code is considered to be a nuisance but may cause long-term damage to the engine if left untreated.