Guide To P2625 OBD Error Code Solutions

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Refusal of the engine to start is actually known as the injector control pressure regulator circuit high. The oil pressure which comes out of the high-pressure oil pump is carefully operated by the injector control pressure regulator. This pressure governs the fuel injectors. The injectors will start malfunctioning if the oil pressure is less. As the engine keeps running, the powertrain control module will look after the fuel pressure. If an incorrect signal is sent back by the oil pressure regulator, then the P2625 error code will be set in the vehicle.

The proper monitoring of the injector control pressure regulator is done by the PCM. When the factory expectation is not properly met by the injector control pressure regulator, then the PCM will set the error code in the vehicle.

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

• The injector control pressure regulator might seem to be defective.
• You might find an opening in the injector control pressure regulator harness or the circuit might be shorted.
• The electrical connection might be poor in the injector control pressure regulator.

1. Powertrain Control Module - Does your engine turn off without any reason? Then it’s a high time to replace your PCM as it can be faulty.
2. Throttle Position Sensor - The TPS can turn out to be defective if the acceleration by the vehicle is very low. Change your faulty TPS as soon as possible.
3. Throttle Body - Do you find the flashing of the engine light without any reason? Then the throttle body can be defective which has to be altered quickly to avoid the P2625 error. Get a new one from PartsAvatar.
4. Fuel Injector - Increased fuel consumption can cause of the malfunctioning of the fuel injector. It is best to change or fix it quickly.
5. High-Pressure Oil Pump - There will be a loss in oil pressure if the high-pressure oil pump is defective. Change it quickly to avoid the P2625 error code.
6. Injection Pump Regulator - Get rid of the P2625 error code by changing the faulty injection pump regulator.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2625 code by mentioning some major symptoms below:

Common Symptoms

• The vehicle will refuse to start.
• Conditions of engine stalling.

Have a look at some ways with which you can correct the P2625 code:

• Check for any possible damage in the components like throttle position sensor, fuel injector, and injection pump regulator.
• If you find them to be defective replace it as soon as possible.

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Here are some steps which you should follow in order to diagnose this fault code P2625:

• The injector control pressure sensor will receive a less voltage of 5 volts.
• You will have to ground this low voltage signal through the sensor.
• The voltage input signal to the PCM will increase when the injector control pressure increases and the sensor resistance goes down in the system.
• In order to check the minimum and maximum voltage reading from the injector control pressure sensor, the PCM will be programmed so that injector control oil pressure can be continuously monitored.
• Multiple tools will be required to carefully diagnose this error code.
• To diagnose this error, you need multiple tools as they can help you to know where the error is stored.
• Diagnose the code with the help of a scanner and DVOM.
• A manufacturer’s service manual will be essential.
• Carefully check the ignition switch wires and connectors
• The damaged wires, connectors, and other components have to be separated and repaired.
• After each successful diagnosis, recheck the system.
• Attach a scanner to the vehicle if every component is in proper working conditions and then retrieve both the stored codes and freeze frame data.
• This is highly helpful to find if there are any irregular conditions which made this error code to get stored in the vehicle.
• Clear all codes and retest the vehicle to see if any error has occurred.
• This will help you to know if the condition was irregular. Clear all codes and retest the vehicle to see if an error appears again.
• The condition will be erratic if the code does not show up instantly.
• In one such situation, you have to worsen the condition of the vehicle before proceeding for further diagnosis as this is a challenging task.
• 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.
• Make it reach a normal operating temperature and write down the actual injector control pressure reading during idle condition 1200 RPM and 2500 RPM.
• Compare your readings with the manufacturer’s and perform repair works as needed.
• Clear the error codes and start the engine to normal operating temperature to make sure the repairis successful.
• Detach the injector control pressure connector and carry out a resistance test on the sensor if the injector control pressure lies within specifications.
• Compare your readings with the manufacturer’s 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.
• Compare your readings with the manufacturer’s specification and fix the open or shorted wires if needed.
• Malfunctioning of the PCM is very rare and it must be reprogrammed before replacing it.

Common Mistakes When Diagnosing the P2625 Code

• High-pressure oil pump might be faulty.
• Damaged injection pump regulator.
• An issue might arise due to faulty wires.
• Low-level engine oil.