Code result
P04DA
Closed Loop EGR Control At Limit Flow Too High
Moderate severity
What it means
Same as P04D9 with the controller fully closing the actuator yet still measuring more EGR flow than required. The valve does not seat fully, or position feedback under-reads.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Valve does not seat fully (debris or wear)
highOne of the most commonly reported causes for this code — check this first.
Position sensor offset
mediumA plausible cause — test and verify before replacing parts.
Related help
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