P0D4C code meaning
Battery Charger Hybrid/EV Battery Output Voltage Sensor Circuit
What P0D4C means
P0D4C is the general circuit code for the sensor that reports the DC voltage the on-board charger delivers to the high-voltage traction battery. No manufacturer documents P0D4C publicly; GM (Volt, ELR) and Mitsubishi (Outlander PHEV) split electrical faults of this measurement into the low and high codes P0D4E and P0D4F instead, and GM's Volt checks plausibility with P0D4D. CARB requires plug-in hybrids to detect charger faults that stop or limit charging, which is why such a sensor is diagnosed at all. The code points to an open or otherwise unusable signal path, usually inside the charger itself. Driving normally remains possible, but AC charging is typically refused until the fault is cleared.
P0D4C at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0D4C
- Plug-in charging does not start or stops shortly after starting
- Charging system warning in the instrument cluster
- Vehicle can still be driven on stored energy or fuel
Common causes of P0D4C
- Most likelyVoltage sensing electronics inside the on-board charger failed
- PossibleInterrupted signal path or poor internal connection in the charger
- Less likelyCharger software fault, fixed by reprogramming
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Battery charger hv output voltage sensorOn board charger
What each part of P0D4C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 4C | The exact fault in that area. |
What to do next
- Note P0D4C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0D4C
What does P0D4C mean?
P0D4C means "Battery Charger Hybrid/EV Battery Output Voltage Sensor Circuit". P0D4C is the general circuit code for the sensor that reports the DC voltage the on-board charger delivers to the high-voltage traction battery. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D4C?
P0D4C does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0D4C fail an emissions test?
P0D4C is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0D4C to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P0D4C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.