P138D FORD – Turbocharger/Supercharger Boost Control ‘A’ Temperature Too High

P138D FORD Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P138D FORD Possible Causes

Faulty Turbocharger/Supercharger Boost Control ‘A’,Turbocharger/Supercharger Boost Control ‘A’ harness is open or shorted,Turbocharger/Supercharger Boost Control ‘A’ circuit poor electrical connection

P138D FORD Description

The Powertrain Control Module (PCM) monitors the Turbocharger/Supercharger Boost Control ‘A’. The PCM sets the OBDII code when the Turbocharger/Supercharger Boost Control ‘A’ is not to factory specifications.