DTC codes / P22xx · Fuel and air metering (injector circuits) / P2284
P2284 indicates that the engine control module has detected an out-of-range or erratic signal from the injector control pressure sensor circuit, which monitors the high-pressure oil or fuel rail used to actuate the fuel injectors. The computer compares the sensor voltage against expected values for the current operating conditions and flags the code when the signal falls outside a calibrated window or fails a rationality check.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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