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P2284 OBD-II Trouble Code: Injector Control Press Sensor Circuit Range / Performance

Check Engine Light

P2284 code definition

A trouble code P2284 means that the Powertrain Control Module (PCM) has detected abnormal readings from the injector control pressure circuit. If you see this trouble code, it is important that you turn your vehicle off, because catastrophic engine failure is imminent unless fixed.

This trouble code is exclusive to diesel engines, and if it is found stored in a gasoline, hybrid, or electric vehicle, it is a sign of a malfunctioning PCM. In addition to trouble code P2284, the PCM might store a wide variety of other codes having to do with the injector control pressure sensor, including codes P2283, P2285, P2286, P2287, P2288, P2289, P2290, P2291, and P2292.

What the P2284 code means

A P2284 trouble code is stored on the PCM when pressure within the injector control pressure sensor falls outside of the maximum or minimum parameters set by the manufacturer. This also causes the Check Engine Light to become illuminated, with most vehicles illuminating the Check Engine Light upon the initial failure.

What causes the P2284 code?

Two of the most common causes of a P2284 trouble code is low oil pressure caused by poor maintenance or a low oil level. Some other causes include:

  • A faulty injector control pressure sensor
  • A defective high pressure oil injector control regulator
  • A short in the wiring of the injector pressure control sensor circuit
  • A failure of the injector pressure control connector due to corrosion and/or heat

What are the symptoms of the P2284 code?

Symptoms of a P2284 trouble code is the illumination of the Check Engine Light and the storing of the code in the PCM. Failure to turn the engine off when a P2284 trouble code is stored can lead to catastrophic engine failure. It is important to get any stored trouble codes as soon as possible when the Check Engine Light comes on.

How does a mechanic diagnose the P2284 code?

To properly diagnose a P2284 trouble code, a mechanic needs an advanced scanner, digital volt/ohmmeter, and a manual oil pressure gauge. To diagnose the problem, the mechanic should:

  • Visually inspect all wiring, connectors, and components associated with the injector control pressure sensor.

  • If all wiring, connectors, and components are normal, connect the advanced scanner to the diagnostic connector and download any stored codes and data.

  • Make sure the oil is at the proper level in the engine.

  • Clear the code and perform a test drive to see if the P2284 trouble code returns, making sure that the engine reaches a normal operating temperature in the process.

  • If the trouble code still persists, shut off the engine and connect a manual oil pressure gauge to the injector control passage.

  • Start the engine and allow it to reach a normal operating temperature, and then check it for leaks.

  • While the manual oil pressure gauge is connected, check the injector control pressure readings while the engine is idling, at 1,200 RPMs and at 2,500 RPMs. Compare the readings with the manufacturer's specifications.

  • The mechanic can also disconnect the injector control pressure sensor connector and perform a test using the digital volt/ohmmeter if a faulty injector control pressure sensor is suspected.

  • Once all necessary repairs have been made, the mechanic should clear the code again and retest the system, allowing the engine to reach a normal operating temperature while doing so.

Common mistakes when diagnosing the P2284 code

Replacing the injector control pressure sensor does not always fix the problem. In cases where the low oil pressure condition has existed for a prolonged period, replacement of the injector control pressure sensor might initially appear to fix the problem only for the low injector control pressure condition, and thus the trouble code will return upon the engine reaching a normal operating temperature.

How serious is the P2284 code?

A P2284 trouble code should be dealt with immediately. Continuing to operate a vehicle with this code can eventually lead to catastrophic engine failure.

What repairs can fix the P2284 code?

In order to repair the injector control pressure sensor and clear the P2284 trouble code, the mechanic can do the following:

  • Replace any faulty or damaged wiring, connectors, or components according to initial testing.

  • Also, the mechanic should make sure the oil level in the engine is at the proper level.

  • If the problem persists, further tests of the injector control pressure sensor, and even the PCM, might be necessary. If found to be faulty, replace these items as well.

  • If replacing the PCM, reprogram the new one upon installation.

  • In addition to wiring, connectors, and components, the mechanic needs to check and repair any oil leaks they find.

Need help with a P2284 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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