Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
Diagnostic trouble code (DTC) ECM-6806 is stored if the control module deployment of the turbocharger (TC) control valve is 100 % (the control module request maximum pressure) and the measured boost pressure (from the boost pressure sensor) is lower that a calculated desired value. The fault is diagnosed by the control module when the engine speed (RPM) and load are above a certain value.

Substitute value
Reduced boost pressure.

Possible source
- Air leakage in the intake system.
- Pressure servo for the boost pressure control (BPC) valve is incorrectly adjusted.
- Sticking boost pressure control (BPC) valve
- Faulty turbocharger (TC) control valve.
- Damaged turbo charger (TC).

Fault symptom[s]
- Poor performance.