P0D80
Battery Charger Input Circuit/Open.
- Generic
- Powertrain
- Generic code
- Medium severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- D
- AreaReserved
- 80
- FaultThe specific fault in that area
What it means
P0D80 is the generic code for a fault in the battery charger input circuit, reported as an open circuit. The control unit that manages charging (on a plug-in hybrid or electric vehicle, usually the on-board charger or charge control module) saw no valid signal or supply on the charger input, or a reading outside the expected range. The exact circuit monitored and the set conditions vary by model and manufacturer.
Symptoms
- Warning light on, such as the hybrid system, charging system or general fault lamp
- Vehicle will not charge from the charging point, or charging starts and then stops
- Charge port indicator or dashboard shows a charging fault
- Reduced electric range or the vehicle running on the engine more than usual (plug-in hybrids)
- Intermittent charging that depends on cable position or weather
Possible causes
- Damaged, corroded or loose connector or terminals at the on-board charger or charge portlikely
- Open circuit, chafed or broken wiring in the charger input or signal circuitlikely
- Faulty charge port or inlet assembly, including internal sensors or contactspossible
- Blown fuse or relay or a lost supply or earth to the charger control circuitpossible
- Fault in the on-board charger or charge control module itselfpossible
- Low 12 V battery voltage causing the control unit to misread the circuitpossible
- Outdated control unit software where the manufacturer has documented a faultrare
How to diagnose
- Read all stored and pending codes and the freeze frame data, noting whether the fault occurred while plugged in, charging or driving.
- Check the 12 V battery condition and charging voltage, and clear other low-voltage codes first as they can cause false circuit faults.
- Try a different known-good charging point and cable to rule out an external supply or cable problem.
- Visually inspect the charge port, pins, seals and the connectors at the on-board charger for damage, water, corrosion or bent terminals.
- Check the relevant fuses and relays against the model's wiring diagram.
- Following the manufacturer's high-voltage safety procedure, and only if trained and qualified, test the input circuit for continuity, supply and earth.
- Check the live data for the charger input and charge port signals while plugging and unplugging, and wiggle-test the harness to find intermittent faults.
- Check for technical bulletins or software updates for the specific model and fault.
How to fix
- Clean, repair or replace damaged connectors and terminals, and fix any water ingress.
- Repair or replace the open or damaged wiring section to match the manufacturer's specification.
- Replace a faulty charge port or inlet assembly.
- Replace blown fuses or faulty relays after finding why they failed, and restore the supply or earth.
- Replace or repair the on-board charger or charge control module only after the wiring and supplies are proven good, then complete any required setup.
- Fix or replace a weak 12 V battery, and apply a manufacturer software update where one is documented.
Can I keep driving?
The car can often still be driven, but external charging may not work and hybrid systems may run in a reduced mode, so book it in soon. Any work on high-voltage parts must be done only by a suitably trained technician.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.