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SPN 2791 FMI 7

EGR Valve Control — 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: The output circuit the engine computer uses to drive the EGR valve. More on SPN 2791.

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

Expect reduced performance and higher soot until fixed.

Likely causes

  1. EGR valve motor/solenoid failure
  2. Wiring open or short
  3. Valve stuck with carbon

Checks & fixes (easiest first)

  1. Check the control circuit for opens/shorts
  2. Command the valve with a scan tool
  3. Inspect and clean the valve

FAQ

What does SPN 2791 FMI 7 mean?

EGR Valve Control — 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 2791 FMI 7 serious?

Expect reduced performance and higher soot until fixed.

What should I check first for SPN 2791 FMI 7?

Check the control circuit for opens/shorts; Command the valve with a scan tool; Inspect and clean the valve.