Diagnostic trouble code (DTC) information

Condition 

Diagnostic trouble code (DTC) ECM-2E is stored if the control module detects that a too high or too low air mass is forced into the engine. This is interpreted as too high or too low boost pressure.

Substitute Value 

• No idle air trim adaptation
• No engine speed (RPM) limitation
• The boost pressure control (BPC) diagnostic is disabled.

Possible Source 

Signal too low: 

• The boost pressure control (BPC) valve has stuck in the open position
• Air leakage in the charge air pipe or intake manifold
• Defective turbocharger (TC)
• Defective mass air flow (MAF) sensor.

Signal too high: 

• The boost pressure control (BPC) valve has stuck in the closed position
• Leakage in the hoses for the boost pressure control (BPC) pressure regulator
• Defective boost pressure control (BPC) valve pressure regulator
• Defective mass air flow (MAF) sensor.

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit
• Deterioration in performance
• Improved performance
• High idling speed
• Low idling speed.