What it means
A circuit fault is detected in the battery charger A input voltage sensor A circuit. The reading may be unreliable.
At a glance
- The engine or gearbox may go into limp mode
How it works
Battery Charger A has an input-voltage sensor A that reports voltage at the charger's input to the control module. P0D3D indicates a fault in this sensor's circuit, making the voltage reading unreliable for charging control.
Common causes
Most likely first.
- Sensor failed
- Wiring or connector fault
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Save freeze-frame data and review charging status and available live data to determine when the Battery Charger A input-voltage sensor A circuit fault occurs.
- Inspect the sensor A connector and accessible wiring for loose connections, corrosion, damaged insulation, or pulled terminals.
- Check the circuit's power, ground, signal, and continuity against the wiring diagram and manufacturer's specification.
- Compare the sensor A reading with other available input-voltage data to see whether the reading is missing or implausible.
- If the circuit checks out, test the input-voltage sensor A using the approved service procedure.
Common fixes
- Reseat and secure the input-voltage sensor A connector.
- Repair damaged wiring or corroded terminals in the sensor A circuit.
- Replace input-voltage sensor A if the circuit is sound and the sensor fails testing.
- Confirm the charging system operates without the circuit fault returning.
Can I keep driving?
Charging may fail to start, be interrupted, or run slowly while the module cannot trust Battery Charger A's input-voltage reading. Do not count on a full charge until the warning is resolved and a charging session completes normally.
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.