P0D4D code meaning
Battery Charger Hybrid/EV Battery Output Voltage Sensor Circuit Range/Performance
Powertrain system Generic code P0Dxx codes Check engine light
What P0D4D means
P0D4D means the charger's output voltage reading is electrically valid but fails to match the rest of the system. GM's second-generation Volt (2016-2019 tables) compares it with the traction battery voltage while charging is ready: a gap of more than 30 V sets the code, in 2019 after 320 of 400 samples taken every 25 ms, as a Type B fault with MIL after two trips. GM issued engineering information PIE0828 for 2022-2023 Bolt EV and EUV cars showing the MIL with P0D4D, P0D4E and P0D4F, root cause still under investigation. Kia lists P0D4D in bulletin 298 for the 2023 Niro EV among codes that, if active, lead to replacement of the integrated charging unit. Hard signal faults are P0D4E and P0D4F.
P0D4D at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0D4D
- MIL on (GM Volt, Bolt)
- Slow AC charging or no AC charging
- Check electric vehicle system message (Kia)
Common causes of P0D4D
- Most likelyOutput voltage measurement inside the charger drifted or inaccurate
- PossibleIntegrated charging unit failed (Kia ICCU, GM charger module)
- Less likelyReference value from the battery voltage measurement wrong
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 P0D4D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 4D | The exact fault in that area. |
What to do next
- Note P0D4D 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 P0D4D
What does P0D4D mean?
P0D4D means "Battery Charger Hybrid/EV Battery Output Voltage Sensor Circuit Range/Performance". P0D4D means the charger's output voltage reading is electrically valid but fails to match the rest of the system. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D4D?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0D4D fail an emissions test?
P0D4D 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 P0D4D to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P0D4D clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.