Error Code P2291: What It Means & What To Do?
OBD Code P2291 - Injector Control Pressure Too Low - Engine Cranking
The
trouble code P2291 can be defined as Injector Control Pressure Too Low - Engine
Cranking. The injector control pressure is being monitored by the engine
control module. This trouble code would be set by the ECM when the injector
control pressure would not be as per the specifications set by the
manufacturer.
Learn More About OBD Error Code P2291
This fault
code will only be found on diesel powered automobiles. It would start
indicating that the injector control pressure for the high pressure oil has
fallen below the threshold of acceptance which is set by the manufacturer
during the cranking of the engine. The engine control module, powertrain
control module or the transmission control module monitors this circuit
depending upon the particular automobile.
What causes
this problem with the Injector Control Pressure Too Low - Engine Cranking?
- Malfunctioning
high-pressure injection pressure switch
- The control
circuits might be open or little
- The oil
level might be very low
- There can be less oil pressure
Replace/Repair These Parts To Fix Code P2291
- Fuel Injector - Facing some issues in starting your vehicle? Poor idle issues? Failed emissions? These are all the symptoms of bad, faulty, leaking and clogged fuel injectors. It would be a good decision to replace your defective fuel injector with a new one online.
- Engine Control Module - It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
- Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus check and replace it, if required.
- Electronic Control Unit - The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced, if found faulty. Thus, buy new ECU modules and components from us!
- Fuel Pressure Regulator - A fuel pressure regulator is a device used to control the pressure of fuel supplied to the fuel injectors on an engine, even during dramatic changes in fuel demand. Controlling this pressure is needed so that the fuel injectors can receive and dispense fuel at a known rate. So, it is important to replace faulty regulator now!
- Diagnostic Tool - Make use of quality diagnostic tools to resolve any OBD error code. Buy quality diagnostic tools from us!
Symptoms Of The OBD Error Code P2291
Willing to know some common symptoms of OBD Trouble Code P2291? Your wish is our demand. Have a look at them below:
Common Symptoms
- Issues related to no start condition
- Excessive smoke might start coming out from the exhaust
- Unusual noises from engine compartment
How To Correct Injector Control Pressure Too Low - Engine Cranking 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 P2291:
- You must fix the defective fuel filter
- Repair or replace the quirky fuel pump
- It is necessary to perform proper service of the unsound fuel pressure regulator
- Adjust the flawed PCM
There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade injector control pressure sensor, fuel injector, pcm, ecm, fuel pressure sensor, oil pump, fuel filter, fuel injector pump, ecm module, pcm module, ecm car, pcm car and a lot more for our precious customers.
Easy Diagnosis Of Engine Error OBD Code P2291
If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:
A technician begins by hooking the vehicle to an OBD-II scanner to verify that the code is present, and check for other codes. The freeze frame data along with current data is recorded, and the codes are then cleared to see if they reoccur.
Visual inspection of the wiring and connectors to check for loose connections, corrosion, or shorts is done.
A specialized tool may be used to test the injection pressure sensor. Other tests of the injection pressure sensor and its components may help pinpoint the problem, as well as inspection of the wiring and connectors.
Disconnect and check the resistance and signal voltage from the injection pressure sensor. If all the components check out, inspect for the fault in the PCM as it can sometime store wrong OBD code and thus might need replacement or reprogramming.
Common Mistakes When Diagnosing The P2291 Code
- There are many mechanics that simply clear the ECM memory codes before inspecting the freeze frame data for the main failure problem, so the failure may be duplicated and repaired.
- Restoring the high pressure oil pump when there is just a requirement oil change.
- Another mistake of not checking the ICP for the proper voltages per specifications and pinpoint tests.