What it means
The control module monitors the operation and reported status of high-voltage power outlet control module C on DC/AC converter A. It sets this code when module C reports a fault or its operation fails the system’s checks.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
DC/AC converter A supplies AC power to its outlets, while control module C reports or manages one of those outlet functions. B012E identifies a fault reported by module C or a failure of its system checks; causes can include the module, its wiring or supply, or its communication link.
Common causes
Most likely first.
- Internal failure of outlet control module C
- Open or shorted module wiring
- Loose or corroded connector
- Power or ground supply fault
- Communication fault with the module
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
How to diagnose it
- Capture freeze-frame information and check for other converter or communication codes that may show whether the fault is isolated to module C.
- Inspect module C’s connector and harness for looseness, corrosion, moisture, damaged insulation, or pushed-back pins.
- Measure module C’s power and ground circuits and compare the results with the wiring diagram and manufacturer’s specification.
- Check module C’s communication circuit for an open, short, or poor terminal contact.
- If the power, ground, wiring, and communication checks pass, use the manufacturer’s procedure to determine whether module C itself has failed.
Common fixes
- Secure the module C connector and repair corroded or damaged terminals.
- Repair open or shorted wiring to module C.
- Correct a failed power or ground supply to module C.
- Repair the communication link serving module C.
- Replace outlet control module C if diagnosis confirms internal failure.
Can I keep driving?
Avoid relying on the outlet function associated with module C until it is working correctly. The code may not prevent driving, but heed any additional electrical warnings and keep away from high-voltage components.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.