Diagnostic trouble code (DTC) information ECM-602D
Condition
The engine control module (ECM) checks the function of the turbocharger (TC) control system.
The diagnostic trouble code (DTC) is stored if the control module deployment of the turbocharger (TC) control valve is high (the control module requests maximum boost pressure) and the measured boost pressure (from the boost pressure sensor) is lower than a calculated desired value.
The diagnostic trouble code (DTC) can be diagnosed 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.
- Damaged turbocharger (TC) control valve.
- Incorrect adjustment of the pressure servo for the boost pressure control (BPC) valve
- Sticking boost pressure control (BPC) valve.
- Damaged turbo charger (TC).
Fault symptom[s]
- Poor performance.