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P0406

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Loss of performance. Limp home.

P0406


EGR Valve Feedback Circuit. Too High.


Fault symptoms


• CHECK ENGINE lamp on.

• Loss of performance.

• Limp home.


Conditions

The following conditions apply for the DTC in question:


• A fault is present in the circuit between control module pin M24 and EGR-valve pin 4. the fault indicates a short circuit to B+ (continually high).


Diagnostic help

For more information, refer to "Read value" EGR.