Diagnostic trouble code (DTC) information

Condition 

Diagnostic trouble code (DTC) ECM-6814 is stored if the relationship between the measured pressure (from the boost pressure sensor) and the calculated boost pressure is greater than a certain value. The fault is diagnosed by the control module when turbocharger (TC) control is active.

Substitute Value 

Reduced boost pressure.

Possible Source 

• Air leakage downstream of the turbocharger (TC) (between the turbocharger (TC) and the throttle unit)
• The boost pressure sensor has come loose (measures the atmospheric pressure)
• Defective boost pressure sensor.

Fault symptom[s] 

• Poor performance.