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P2290 OBD-II Trouble Code: Injector Control Pressure Too Low

Check Engine Light

What the P2290 code means?

P2290 is an OBD-II generic code for the engine control module (ECM) detecting the injector control pressure is too low. This is a difference of commanded fuel pressure and actual pressure. This code is used on direct injection diesel engines.

What causes the P2290 code?

  • The ECM controls and monitors the fuel injectors fuel pressure and if the commanded fuel pressure is lower than is commanded, then the code is set.

  • The fuel is gelled up or the high pressure oil pump has a problem.

  • The oil in the engine is overdue for a change or the oil is poor quality.

What are the symptoms of the P2290 code?

  • The Check Engine light will be illuminated and the code is set in ECM memory as a fault.

  • The engine may run low on power or not have a limited revolutions per minute (RPM) depending on how low the fuel pressure is and failure reason.

  • The engine may run good but lack top end speeds.

How does a mechanic diagnose the P2290 code?

  • Scans for codes and documents the code in the ECM and looks at the freeze frame data for failure.

  • Checks the fuel and engine oil for problems like gelled fuel, dirty oil, oil quality or fuel quality.

  • Checks fuel and oil pressures.

  • Checks the fuel pressure at idle and at wide open throttle.

  • Checks the injection control pressure (ICP) for the proper voltages per specification.

Common mistakes when diagnosing the P2290 code?

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired

  • Replacing the high pressure oil pump when all is needed is an oil change

  • Not checking the ICP for the proper voltages per specifications and pinpoint tests

How serious is the P2290 code?

Code P2290 is a code indicating the fuel pressure is lower than commanded to the injectors. The problem may cause various other problems due to the fuel being gelled or the oil system needing service. These problems are more common than failed parts and should not be discounted to cause the issue.

What repairs can fix the P2290 code?

Additional comments for consideration regarding the P2290 code

Code P2290 is caused most commonly from poor diesel fuel quality or using the incorrect fuel for the season you are in. Using your own biofuel can cause gelling of the fuel and clogging of the fuel filter. The oil should be changed on schedule and can cause the high pressure pump to not work correctly causing the low fuel pressure.

Need help with a P2290 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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