P0D28 code meaning
Battery Charger Input Voltage Too High
What P0D28 means
P0D28 is the mirror case of P0D27: the AC voltage at the charger input lies above the range the charger can accept. Mitsubishi evaluates both on the Outlander PHEV while the PHEV-ECU allows charging; the charger then stops and the technician works from the outside in, beginning with the supply and the charging cable, then the wiring between inlet and charger, and only last the charger. A real overvoltage is rare on public grids, so a faulty voltage measurement or software is often more likely. Audi lists P0D2800, battery charger primary voltage too high, among ghost DTCs stored by software 0088 in the high-voltage charger module of the e-tron and Q8 e-tron (2021-2024); bulletin 2062631 says to leave them unrepaired unless a charging complaint exists. Sensor faults are P0D3E-P0D40.
P0D28 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0D28
- AC charging stops or does not start
- Code found in memory without any complaint
Common causes of P0D28
- PossibleInput voltage sensing inside the charger reading too high
- PossibleCharger software storing the code without a real fault (Audi ghost DTC)
- Less likelyActual overvoltage or unstable supply at the charging location
- Less likelyFaulty charging cable or EVSE
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Battery chargerAc input circuit
What each part of P0D28 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 28 | The exact fault in that area. |
What to do next
- Note P0D28 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 P0D28
What does P0D28 mean?
P0D28 means "Battery Charger Input Voltage Too High". P0D28 is the mirror case of P0D27: the AC voltage at the charger input lies above the range the charger can accept. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D28?
P0D28 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0D28 fail an emissions test?
P0D28 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 P0D28 to fix?
Difficulty: medium. A typical repair takes 0.3 to 4 hours of work. This is a job for a workshop.
Will P0D28 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.