Vehicles may exhibit a malfunction indicator lamp (MIL) on with a diagnostic trouble code (DTC) P0401...

Bulletin number

7857

Component

Engine and engine cooling: exhaust system: emission control: gas recirculation valve (EGR valve)

Summary

Vehicles may exhibit a malfunction indicator lamp (mil) on with a diagnostic trouble code (dtc) p0401 and/or p1408 stored in memory. This may be caused by a loss of vacuum to the exhaust gas recirculation system because the rubber vacuum elbow (located on the back side of the intake manifold) has been seated against the vacuum port.

Owners of these vehicles have filed 138 complaints in the engine category.