Conditions for Setting the DTC

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The actual system pressure at either shutoff/check valve is at least 7kPa (1.0 psi) greater or 7kPa (1.0 psi) less than the predicted system pressure for greater than 7s.
OR
The difference between the predicted magnitude of pressure pulsations and the actual magnitude of pressure pulsations, at either shutoff/check valve over a specific length of time, exceeds a calibrated threshold.