Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Trouble Code (DTC) Information ICM-Dc02
Condition
The infotainment control module (ICM) checks that the status of the MOST network is MOST-LOCK. MOST-LOCK means that the network is closed and that communication is possible.
The diagnostic trouble code (DTC) is stored if the infotainment control module (ICM) registers that the MOST network is not in MOST-LOCK mode.
The diagnostic trouble code (DTC) can be detected when the ignition is in position I or II for at least 5 seconds.
Substitute Value
- None.
Possible Source
- Dirty or damaged terminal for the MOST cable
- Open-circuit in the MOST cable
- The MOST transceiver is damaged in one of the control modules in the MOST network
- No power supply to a control module in the MOST network
- Damaged fuse.
- Damaged control module in the MOST network.
Fault symptom[s]
- Audio unit not operating.
- The display does not light.
- Functions in the infotainment system do not work.
- No or reduced carphone functionality.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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