DI10-164
EGR Valve Control Fault
Trouble Code and Symptom
P0400
EGR Valve Control Fault
Diagnosis Procedures
Read DTC
EGR valve and HFM sensor
related DTC?
NO
Check vacuum modulator/
turbo charger boost modula-
tor and vacuum lines for leak
and installation
Repair completed
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Trouble Code
YES
Check
sensors and
EGR system
Symptom
Unable Cruise Control
DIAGNOSIS
DI ENG SM - 2004.4