P2624 OBD Error Code: Problem & Solutions

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Are you looking for information with regard to P2624 error code? Then you are at the right place as you can gather more information on this error code. The hesitation of the engine to start is known as injector control pressure regulator circuit low. The oil pressure which goes out of the high-pressure oil pump is actually operated by the injector control pressure regulator. This pressure is utilized to operate the fuel injectors. The injectors will fail to function properly if the oil pressure is less. As the engine runs, the PCM will look after the fuel pressure. The error code P2624 will get stored, if an erratic signal is sent back by the oil pressure regulator.

The powertrain control module will carefully look after the circuit of the injector control pressure regulator. The error code will be set in the vehicle by the PCM if the factory specification is not properly met by the injector control pressure regulator circuit.

What causes this problem with the Injector Control Pressure Regulator Circuit Low?

• The injector control pressure regulator might be damaged.
• You will see an opening or short circuit in the injector control pressure regulator harness.
• Bad electrical connection in the injector control pressure regulator.

1. Powertrain Control Module - A faulty PCM can cause misfiring issues and the engine behavior might also be erratic. If your vehicle is causing misfiring issues, then it is because of a faulty powertrain control module. Shop them from Parts Avatar at best prices online.
2. High-Pressure Oil Pump - Poor performance of the vehicle is an indication of a damaged high-pressure oil pump. Replace it quickly to avoid system malfunctioning.
3. Fuel Injector - Does your engine face trouble during acceleration? Does your vehicle experience start trouble? Then the fuel injector can be defective. Change them as soon as possible.
4. Throttle Body - The throttle body can be defective or damaged if the acceleration by the vehicle will be very slow. Get it fixed quickly to avoid the P2624 error.
5. Throttle Position Sensor - One of the symptoms for a defective throttle position sensor, is the engine stalling. Get rid of the damaged throttle position sensor immediately.
6. Injection Pump Regulator - A damaged or defective injection pump regulator has to be replaced quickly to avoid troubles in the system.

Willing to know some common symptoms of OBD Code P2624? Your wish is our demand. Have a look at them below:

Common Symptoms

• Impossible for the vehicle to start.
• Engine stalling

We have listed out some ways which would help you to correct the occurrence of OBD Code P2624. They are mentioned here as follows:

• Visually inspect the fuel injector, throttle body, and throttle position sensor.
• Any possible defects in these components must be replaced immediately.

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If you want to easily diagnose this fault code P2624, then all you have to do is to follow the steps which are mentioned below:

• The injector control pressure sensor receives a low voltage of 5 volts which is then grounded through the sensor.
• When the injector control pressure increase, the sensor resistance will go low which finally increases the voltage input signal to the PCM.
• To continuously check the injector control oil pressure from the injector control pressure sensor, the PCM will be programmed to confirm the maximum and minimum voltage reading.
• To properly diagnose this code, you will need several tools.
• To proceed with the diagnosis, a scanner and DVOM is needed.
• As you diagnose this error, a manufacturer’s service manual will be highly helpful.
• Start the diagnosis by inspecting the wires as well as the connectors.
• Fix the damaged, separated, shorted or eroded wires as needed.
• Recheck the system by clearing the error codes and make sure the repair work is done successfully.
• If each of the wires and connectors works properly, retrieve every of the stored codes and freeze frame data by fixing a scanner to the diagnostic connector.
• This data can be highly useful to diagnose the erratic conditions which would have helped in the storing of this code.
• Once the error codes are removed, check again to see if the error appears.
• Erratic conditions may persist if the code does not come quickly.
• In an extreme situation, this erratic condition can be quite risky to diagnose and this situation has to be made to worsen before you proceed further.
• The injector control pressure sensor or injector control pressure regulator can be faulty if the injector control pressure goes high.
• Change the damaged components.
• Clear the error codes and activate the engine to normal operating temperature to make sure the repair is successful.
• Fix a scanner or code reader to check the condition of the low injector control pressure and note down all the trouble codes and freeze frame data that is stored.
• Turn off the engine and clear the error codes.
• Attach a manual oil pressure gauge to the injector control passage.
• Check for leaks by starting the engine.
• Allow it to reach a normal operating temperature and note down the actual injector control pressure reading during idle situation 1200 RPM and 2500 RPM.
• Relate your findings with the manufacturer and perform repair works as necessary.
• Clear the error codes and activate the engine to normal operating temperature to make sure the repair is successful.
• Separate the injector control pressure connector and carry out a resistance test on the sensor if the injector control pressure lies within specifications.
• Relate your findings with the manufacturer and change the injector control pressure sensor as necessary.
• The sensor can be faulty if the electrical connector face of the injector control pressure sensor is polluted with engine oil and replace it quickly.
• Carry out a continuity or resistance test on all wires by disconnecting the PCM connector if the sensor lies within the acceptable specification.
• Relate your findings with the manufacturer specification and fix the open or shorted wires if needed.
• Failure of the PCM is very rare and it must be reprogrammed

Common Mistakes When Diagnosing the P2624 Code

• Malfunctioning of the high-pressure oil pump.
• An issue with the electrical wires.
• Defective ignition pump regulator.
• The level of the engine oil is low.