18 1999 Ford F150 Egr Flow Insufficient : Pros, Cons, How Much It Costs. This is how to repair a egr flow problem on a ford product. When the sensor goes bad, the check engine light comes on and typically sets any or all of teh following fault codes:
If your check engine light comes on with a code p0401 egr insufficient flow you most likely have clogged egr ports in the throttle body and just needs a litt. This is how to repair a egr flow problem on a ford product. When the sensor goes bad, the check engine light comes on and typically sets any or all of teh following fault codes: