SPN 27 FMI 7
EGR Valve Position — Mechanical system not responding or out of adjustment.
The controller commanded something to move or change, and the result did not match the command.
What the SPN covers: Tracks how far open the exhaust gas recirculation (EGR) valve is compared with where the engine computer asked it to be. More on SPN 27.
What FMI 7 usually points to: Stuck or sticking valve or actuator, binding linkage, carbon buildup, or a component worn out of adjustment. More on FMI 7.
Severity
MEDIUM — fix soon
Usually drivable short-term, but expect a derate and more soot. Get it checked soon.
Likely causes
- Carbon-stuck or sticking EGR valve
- Failed EGR actuator or position sensor
- Wiring or connector damage near the hot side of the engine
- Low supply voltage to the actuator
Checks & fixes (easiest first)
- Inspect EGR connector and harness for heat damage
- Command the EGR valve with a scan tool and watch actual vs. commanded position
- Remove and inspect for carbon if it is slow or stuck
- Check related EGR temperature and DPF codes
FAQ
What does SPN 27 FMI 7 mean?
EGR Valve Position — mechanical system not responding or out of adjustment. The controller commanded something to move or change, and the result did not match the command.
Is SPN 27 FMI 7 serious?
Usually drivable short-term, but expect a derate and more soot. Get it checked soon.
What should I check first for SPN 27 FMI 7?
Inspect EGR connector and harness for heat damage; Command the EGR valve with a scan tool and watch actual vs. commanded position; Remove and inspect for carbon if it is slow or stuck.