Error Code P2279: What It Means & What To Do?
OBD Code P2279 - Intake Air System Leak
The trouble code P2279
can be defined as Intake Air System Leak. It is a generic code for the engine
control module detecting a vacuum leak into the engine. It would mean that
unmetered air is entering the engine without the engine sensing it going
through the mass air flow sensor as well as the throttle body.
Learn More About OBD Error Code P2279
The car engine utilizes
a mass airflow sensor or MAP sensor to decide the amount of air which would
enter the intake manifold. The mass airflow sensor utilizes a "hot
wire" for this purpose. The MAP sensor would then signal the pressure
within the manifold.
What causes this problem with the Intake Air
System Leak?
- Leakage in between
engine side of mass airflow sensor and air duct
- Air duct draining engine
side
- There might be a leak at
intake air temperature sensor
- Issues related to the
leak at throttle body
- Malfunctioning intake
manifold
- The vacuum hose might be
flawed
- There can be inoperative
fuel injector seal at manifold
- The brake booster vacuum
hose might be leaky
- There might be a leak
under dash at a vacuum operated device
- PCV valve might be stuck
- Stuck crankcase oil
filler cap
- Anything and everything
which is connected to the intake manifold might potentially cause this scenario
Replace/Repair These Parts To Fix Code P2279
- Engine Control
Module - There can be
some engine performance issues due to faulty engine control module. If the ECM
fails or has any problems it can lead to performance issues with the vehicle
like misfires, hesitation, loss of power, and sometimes even decreased fuel
economy.
- Throttle Actuator
Connector - If the
throttle actuator connector is faulty, it may result in the throttle pedal not
opening in time and causing improper throttle response and sluggish
acceleration. Thus, replace it now!
- Powertrain Control
Module - PCM stands
for powertrain control module. It is a car part, a control unit which is
utilized on motor vehicles. It is generally a combined control unit, consisting
of the engine control unit (ECU) and the transmission control unit (TCU).
- Electronic Control
Unit - If your
automobile's check engine light remains on constantly, and never goes off,
there's a good chance that your vehicle has a damaged electronic control unit.
There are a lot of reasons why a car's check engine light will remain on. The
most common reason is a defective ECU.
- Diagnostic Tools
- It is always advisable to use
correct tools and equipment while resolving any OBD code issue as even small mistakes
can lead to wrong diagnosis. Thus, always take help from a professional who has
the knowledge and experience to such tools in efficient manner. Buy new quality
diagnostic tools from us today!
Symptoms Of The OBD Error Code P2279
Our main motive is to
achieve customer satisfaction as for us our customers are everything and that’s
why we will help you to diagnose P2279 code by mentioning some major symptoms
below:
Common Symptoms
- The service engine soon
light can start lighting up
- The car engine might
start running roughly or may stall if there is major leak in the vacuum
- Engine might start
running lean
- Issues related to engine
misfire
- Rise in the fuel mileage
How To Correct Intake Air System Leak Issue
If you wish to correct
this fault code, then you have to follow certain steps. Correcting a problem
needs your careful attention. Here are some ways with the help of which you
will be able to correct the OBD Code P2279:
- Make sure to relearn the
throttle position for the ECM
- Rehabilitate the leaking
intake gaskets or seals
- Carefully adjust the
faults in the PCM
- The ECU should be
restored to working order
- Recondition the non-functioning PCV valve or hose
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Easy Diagnosis Of Engine Error OBD Code P2279
Here are some steps
which you should follow in order to diagnose this fault code:
- This is a general type
of error code which is diagnosed with the help of a scanner.
- The mechanic will insert
a scanner to diagnostic port of the vehicle and recover the codes and freeze
frame data.
- If he happens to find
any additional error codes, he has to address them as well.
- Once it is done, he has
to reset the vehicle, and then test drive to see if the error code appears.
- If the error code does
not return, then there can be an erratic condition.
- Then the mechanic has to
check the wires, connectors and other electrical components and quickly replace
them if he finds them to be damaged or defective.
- Check engine for any
vacuum leaks, broken, or loose vacuum hoses or air inlet hoses for error.
- Also remove the PCV
valve and inspect to make sure it is not stuck in the open position.
- Parts or components of
the throttle body should be checked to see if it was recently cleaned and then
allow relearning of the throttle position.
- If all the components seem
to work perfectly, inspect the PCM for faults and replacement along with
reprogramming.
Common Mistakes When Diagnosing The P2279 Code
- Most of the technicians
make huge mistake of clearing the ECM memory codes before inspecting the freeze
frame data for the main failure issue, so the failure may be duplicated and
repaired.
- Another mistake might be
to clean the throttle body and not relearning the throttle position again.
- Many mechanics simply
adjust the throttle plates to compensate for a vacuum leak.