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P2289 Injector Control Pressure Too High - Engine Off

OBD-II Trouble Code Technical Description

Article by
Stephen Darby
Stephen Darby
ASE Certified Technician

总裁俱乐部appInjector Control Pressure Too High - Engine Off

What does P2289 mean?

总裁俱乐部appThis diagnostic trouble code (DTC) is a generic powertrain code and applies to many OBD-II vehicles (1996-newer). That may include but is not limited to vehicles from Ford, Range Rover, BMW, Peugeot, Hyundai, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration.


 

When a P2289 has been stored, it means that the powertrain control module (PCM) has detected an excessive degree of pressure in the high-pressure fuel injection system, with the engine shut down.

While this code is utilized primarily in high-pressure diesel injection systems, it may also be used in vehicles with gasoline powered engines. The PCM monitors high-pressure injection using one or more fuel pressure sensors. Since the diesel high-pressure injection system is timed and driven using crucial engine timing components, excessive injector control pressure can indicate that a serious malfunction exists in the engine lubrication and/or timing mechanisms. Conditions resulting in a stored code P2289 may be attributed to either a mechanical condition or an electrical condition.

If the PCM detects an excessive degree of injector control pressure, a code P2289 will be stored and a malfunction indicator lamp (MIL) will be illuminated. Multiple ignition cycles (with a failure) may be required for MIL illumination.

A typical injection control pressure ICP sensor:
P2289 Injection Control Pressure Sensor

What is the severity of this DTC?

Conditions which contribute to a stored code P2289 could result in catastrophic engine damage. It is for this reason that this code should be categorized as severe.

What are some of the symptoms of the code?

Symptoms of a P2289 trouble code may include:

What are some of the common causes of the code?

总裁俱乐部appCauses for this code may include:

What are some P2289 troubleshooting steps?

总裁俱乐部appBegin by making sure that the engine is filled to the appropriate level with oil and that no oil pressure or oil level lamps are illuminated. If this is the case, a manual oil pressure test may be in order. Engine timing components are affected by engine oil pressure. High-pressure injection operation is actuated using engine timing components. If engine oil pressure is low, injection timing may be adversely affected.

总裁俱乐部appYou will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information in order to accurately diagnose a code P2289.

总裁俱乐部appYou may save yourself time by searching for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. This information may be found in your vehicle information source. If you find the right TSB, it could yield a speedy solution to your diagnosis.

After you connect the scanner to the vehicle diagnostic port and retrieve all stored codes and pertinent freeze frame data, write the information down (in case the code proves to be an intermittent one). After that, clear the codes and test drive the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

总裁俱乐部appThe code may be more difficult to diagnose if the PCM enters readiness mode at this point, because the code is intermittent. The condition which caused the P2289 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, continue with the diagnosis.

总裁俱乐部appYou may obtain connector face views, connector pinout charts, component locator charts, wiring diagrams, and diagnostic flow charts (pertaining to the code and vehicle in question) using your source of vehicle information.

Perform a visual inspection of related wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged.

总裁俱乐部appUse the DVOM to test voltage and ground circuits at the injection system pressure sensor/s. If no voltage is detected, check system fuses. Replace blown or otherwise defective fuses as required.

总裁俱乐部appIf voltage is detected, test the corresponding circuit at the PCM connector. If no voltage is detected there, suspect an open circuit between the sensor in question and the PCM. If voltage is discovered there, suspect a defective PCM or PCM programming error.

总裁俱乐部appTest the injection pressure sensor with the DVOM. If it does not comply with manufacturer's specifications, consider it defective.

Related DTC Discussions

Need more help with a P2289 code?

If you still need help regarding the P2289 trouble code, please post your question in our FREE car repair forums.

总裁俱乐部appNOTE: This information is presented for information purposes only. It is not intended as repair advice and we are not responsible for any actions you take on any vehicle. All information on this site is copyright protected.

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