P0400 OBD Trouble Code

EGR System Performance Conditions

DTC P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0601, P0718 and P0724 not set, ECT input above 81°F, engine speed 500-900 rpm, BARO input above 95 kPa, MAP input below 24 kPa, IAC counts steady, no A/C Clutch, Brake switch or TCC transitions, VSS input above 14 mph, then during these Decel Mode Test conditions (throttle angle below 1%, not in DFCO, EGR duty cycle at 0%, then with the EGR solenoid enabled), the PCM detected that the change in the MAP sensor input was less than a predetermined amount stored in memory