Diagnosis And Testing - Diagnostic And Testing

If the boost pressure sensor fails, the Powertrain Control Module (PCM) records a Diagnostic Trouble Codes (DTC) into memory and continues to operate the engine in one of the three limp-in modes. When the PCM is operating in this mode, a loss of power will be present, as if the turbocharger was not operating. The best method for diagnosing faults with the boost pressure sensor is with a scan tool.

Refer to ON-BOARD DIAGNOSTICS in Emissions Control System for a list of (DTC's) for certain fuel system components.