Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-601C

Condition




The engine control module (ECM) checks the function of the turbocharger (TC) control system.
The diagnostic trouble code (DTC) is stored if the pressure measured by the boost pressure sensor is higher than a calculated desired value. This is interpreted as a fault by the control module.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute value
- Reduced throttle angle.

Possible source
- Damaged turbocharger (TC) control valve
- The hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve have come loose or are blocked or damaged
- The hoses between the turbocharger (TC) control valve and the charge air pipe (between the turbocharger (TC) and the charge air cooler (CAC)) are blocked or damaged
- Pressure servo for the boost pressure control (BPC) valve is incorrectly adjusted
- Damaged boost pressure control (BPC) valve pressure servo
- Sticking boost pressure control (BPC) valve.

Fault symptom[s]
- Poor performance.