What it means
The control circuit C of the battery charger coupler status indicator reports a control circuit/open condition. Charging status display impaired.
At a glance
- Usually lights the check-engine light
How it works
The charger coupler status indicator uses control circuit C to display a charging or coupler state. The control module monitors circuit C for an open path and sets P0D8C when it does not detect the expected electrical connection, which can disable the circuit C indication.
Common causes
Most likely first.
- Open in indicator wire
- Indicator lamp burnt out
Symptoms
- Coupler status indicator may not work correctly
How to diagnose it
- Use a scan tool to record freeze-frame data and check whether the code returns when the circuit C indicator is commanded.
- Observe the coupler status indicator during a charging attempt and check whether the indication assigned to circuit C is dark or erratic.
- With the vehicle powered down as specified by the manufacturer, inspect circuit C wiring and connectors for looseness, corrosion, damage, or a broken conductor.
- Check the circuit C indicator lamp or display element for an open or failed element.
- Test continuity through circuit C wiring and the indicator using the manufacturer's procedure to locate the open.
- If the wiring and indicator pass, check the control module connector and circuit C output.
Common fixes
- Reconnect or clean a loose or corroded circuit C connector.
- Repair a broken or disconnected circuit C wire.
- Replace the failed circuit C indicator lamp or display element.
- Repair the circuit C module connection if testing identifies it.
Can I keep driving?
This code can impair the coupler status display without proving that charging has stopped. Confirm charging through another vehicle status display, and stop if the vehicle reports a charging fault.
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.