Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-1C0A

Condition




The central electronic module (CEM) continuously checks the charge status of the battery.
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) detects excessive voltage (above 16 V).
The diagnostic trouble code (DTC) can be diagnosed at engine speeds (RPM) above 600 rpm.

Note! The voltage of the battery is measured by Rear electronic module (REM) and the voltage value is transmitted to Central electronic module (CEM) via CAN-net. This means that the diagnostic trouble code can be generated if the rear electronic module (REM) sends incorrect data.

Substitute value
- None.

Possible source
- A battery charger with too high charge voltage has been connected previously
- Damaged alternator control module (ACM).

Fault symptom[s]
- The electrolyte in battery boils with the engine running
- The headlamp bulb blows.