Shop Parts keyboard_double_arrow_right
Need car parts? Select your vehicle
Reading Time: 3 minutes
  • The P2284 code stands for “Injector Control Pressure Sensor Circuit Range/Performance,” which means the injection control pressure sensor transmitted an improbable signal.
  • The common causes of the P2284 code include a bad injector control pressure sensor, oil delivery system issues, and not enough fuel or oil.
  • Engine start failure, stalling or rough running, and an illuminated check engine light are common symptoms of the P2284 code.

The injector control pressure (ICP) sensor keeps track of the high oil pressure that activates the fuel injectors. It sends its measurements to the powertrain control module (PCM), which makes adjustments to ensure that the engine gets enough fuel and burns it efficiently.

If the PCM receives a signal from the ICP sensor that isn’t within the expected range of operation, its diagnostics will log a P2284 code.

See also  P2623 Code: Injector Control Pressure Regulator Circuit/Open

What Does the P2284 Code Mean?

The diagnostic trouble code (DTC) P2284 indicates “Injector Control Pressure Sensor Circuit Range/Performance.”

injector pressure regulator image
If the PCM receives a signal from the ICP sensor that isn’t within the expected range of operation, it will log a P2284 code.

In certain diesel engines, the fuel injectors rely on high pressure oil to operate properly. An oil pump puts the oil under sufficient pressure to move to the engine and operate the injectors.

The injector pressure regulator, also called the injection control pressure regulator, controls the oil pressure intended for the fuel injectors. It adjusts the performance of the oil pump according to readings provided by the injector control pressure sensor.

The ICP sensor is a variable capacitor sensor. It receives a reference signal from the PCM and sends back a voltage signal that shows the pressure in the system.

The PCM regularly checks readings from the injector control pressure sensor. If the sensor transmits an improbable signal, it will set the generic code P2284.

Note: The definition of code P2284 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P2284 Code?

  • Bad injector control pressure sensor
  • Fuel delivery or oil delivery system problems
  • Not enough fuel or oil
  • Circuit issues, such as a damaged wire or poor connection
  • Bad fuse or fuse-able link
  • Faulty PCM
See also  P2291 Code: Injector Control Pressure Too Low - Engine Cranking

What are the Common Symptoms of P2284 Code?

automotive fuses
A bad fuse or fuse-able link can cause the P2284 code to register.

How to Diagnose the P2284 Code

The P2284 code is a generic code that can be logged by many makes and models. While it can show up in various vehicles, the cause and symptoms can vary according to various factors. The exact steps to diagnose the problem can also change.

If you aren’t confident about conducting diagnostic tests on your vehicle, you should bring it to a professional mechanic. Otherwise, you can go ahead and diagnose the issue yourself. To help you get started, here’s a video that can give you an idea of what the process might involve:

How to Fix the P2284 Code

You’ll need both experience in DIY auto repair and the appropriate tools to repair the P2284 code’s underlying issues. Most drivers lack one or even both, so it’s better for them to ask for professional help in repairing or replacing a faulty injector control pressure sensor.

See also  P2291 Code: Injector Control Pressure Too Low - Engine Cranking

For DIYers with advanced technical knowledge and hands-on experience who prefer to test and replace their vehicle’s ICP sensor on their own, it will be helpful to rely on the appropriate repair manual or refer to an online repair database.

About The Authors
Written By Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Contact Center Manager and Technical Reviewer at

William “Bill” Guzenski has produced hundreds of how-to videos for the automotive community. He’s an ASE Certified Master Automobile Technician, and is affiliated with the Specialty Equipment Market Association (SEMA). He loves attending race events and car shows throughout the country, as well as traveling in his 40-foot motorhome, exploring abandoned mines and ghost towns.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

headlights and components
Notify of
Inline Feedbacks
View all comments

View all Questions & Answers

expand_more Answers BE PART OF OUR COMMUNITY: Share your knowledge & help fellow drivers Join Now