Fault code information
2 trip MIL
3 drive cycle recovery
Readiness group – None
Freeze frame type – Comprehensive
Description of component(s)
Location of component(s)
This diagnostic runs continuously when the ignition is on (engine not running).
Set condition of fault code
The PCI ECU (D420) detects that measured EGR pressure difference deviates by more than 5 mbar [0.07 psi].
Reset condition of fault code
This DTC changes to inactive when the fault is no longer detected. To validate the repair, key on the ignition (NO engine start) and wait for 10 seconds to allow the system to power up and the diagnostics to run.
EGR pressure difference sensor deviation
The EGR pressure difference sensor (F751) is monitored against ambient pressure.