DTC ECM-6806

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
- Incorrect adjustment of the pressure servo for the boost pressure control (BPC) valve
- Sticking boost pressure control (BPC) valve
- Faulty turbocharger (TC) control valve.

Fault symptom[s]
- Poor performance.