DTC P124C - Turbocharger/Supercharger A Boost System Performance during Self Test

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DTC DESCRIPTION P124C - TURBOCHARGER/SUPERCHARGER A BOOST SYSTEM PERFORMANCE DURING SELF TEST

Description:	This DTC sets when the indicated boost pressure is less than the calibrated value by greater than a calibrated threshold.
Possible Causes:	Charge air cooler (CAC) system leaks Intake air system leaks Exhaust system leaks Manifold absolute pressure (MAP) sensor biased Exhaust pressure (EP) sensor biased Restriction in the EP sensor Restriction in the EP tube Variable geometry turbocharger (VGT) vanes sticking
Diagnostic Aids:	If any exhaust gas recirculation (EGR) system DTCs are present with this DTC, it may be an indication of a restricted EP sensor or tube.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST KA .