Code Definition

P2290 — Injector Control Pressure Too Low

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P2290

P2290 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2290 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2290 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

DTC P2290 indicates injector control pressure is too low. On engines using a hydraulically actuated injection system, high pressure oil supplied through the injection pressure regulator actuates the injectors, and the control module monitors injector control pressure with a dedicated sensor. The code sets when actual injector control pressure stays below the desired or minimum calibrated value for a set time during cranking or running, even though the system is commanded to raise pressure. Because the injectors rely on this pressure to fire, symptoms include hard starting or no start, rough ru...

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