Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, calibrate the ECM.

Possible causes:

1)Boost leaks in the charge air cooler plumbing
2)A malfunction of the variable geometry turbocharger (VGT)
3)A malfunction of the exhaust gas recirculation (EGR) valve
4)A faulty in-range EGR differential pressure sensor
5)A faulty in-range boost pressure sensor
6)A faulty in-range barometric pressure sensor
7)A cylinder misfire or overfueling.

Possible repairs:

1)Repair or replace the leaking component.
2)Clean or replace the charge air cooler
3)Replace the intake manifold pressure sensor.
4)Replace the barometric pressure sensor.
5)If necessary, calibrate the ECM.