What it means
The control module monitors the circuit for high-voltage power outlet C on DC/AC converter A. It sets this code when it detects an open circuit or loss of the expected electrical connection at that outlet.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
Outlet C on DC/AC converter A supplies alternating-current power from the vehicle’s high-voltage system to an external load. The control module checks the outlet C connection; this code sets when it detects an open circuit or loses the expected electrical path. High-voltage components can be dangerous even when the vehicle is switched off.
Common causes
Most likely first.
- Outlet wiring open
- Pin pushed back out of connector body
- Cracked solder joint inside the module or sensor
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
How to diagnose it
- Record freeze-frame data and check for other converter or outlet codes that could indicate a shared supply or module fault.
- Stop using outlet C and inspect its exterior for damage, contamination, or a loose cover without opening the outlet or converter.
- Using the vehicle’s wiring information, have the outlet C connector checked for looseness, corrosion, or a pushed-back pin.
- Have the outlet C wiring checked for an open or damaged section using the manufacturer’s high-voltage safety and isolation procedure.
- If the external wiring and connector test correctly, have the converter’s outlet C internal connection checked for a failed joint according to the manufacturer’s procedure.
Common fixes
- Remove debris or moisture from the outlet only as permitted by the vehicle instructions, and ensure its cover and connector seat correctly.
- Repair or replace a damaged outlet C connector or terminal.
- Repair an open in the outlet C wiring using the manufacturer-approved method.
- Repair the converter’s internal outlet C connection if testing confirms a failed joint.
- Replace or repair DC/AC converter A if its internal outlet circuit is defective.
Can I keep driving?
Do not use outlet C while it is faulty, and do not open or probe high-voltage parts yourself. The vehicle may still drive normally, but external power from this outlet can be unavailable; have high-voltage circuit work handled by a qualified technician.
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.