2021 BMW MIL Illuminated CDC152 Fault

Symptoms

Owners of affected 2021 BMW vehicles may notice the Malfunction Indicator Lamp (MIL) illuminated in the instrument cluster. This condition is specifically associated with fault memory CDC152. Despite the warning light, the vehicle experiences no actual operating failures or performance issues. This particular 2021 BMW 330i manufacturer_communication highlights a diagnostic scenario where the warning light appears without a corresponding mechanical or electrical problem.

Fault Codes / DTCs

The primary diagnostic trouble code (DTC) associated with this issue is:

• CDC152: Malfunction Indicator Lamp (MIL) illuminated

This code is stored in the vehicle's fault memory when the MIL illuminates under the conditions described in the manufacturer communication.

Diagnosis / Trigger Conditions

The condition described in this 2021 BMW 330i manufacturer_communication involves the Malfunction Indicator Lamp (MIL) illuminating, accompanied by fault memory CDC152. Crucially, the vehicle does not exhibit any actual operating failures. This suggests that the MIL illumination might be a false positive or a diagnostic anomaly rather than an indication of a genuine component malfunction. Technicians should investigate the specific conditions under which the fault code is triggered, noting the absence of other performance issues.

What Owners Should Know

If you own a 2021 BMW and observe the Malfunction Indicator Lamp (MIL) illuminated with fault memory CDC152, it's important to understand that the manufacturer communication indicates there are no actual operating failures. This means your vehicle's performance and safety systems are likely functioning correctly despite the warning light. While the MIL should always be addressed, this specific scenario suggests a diagnostic rather than a mechanical issue. Consult your authorized BMW service center for proper diagnosis and resolution related to this manufacturer communication.

Source: NHTSA ID 10186224