P0D06 code meaning
Control Pilot Charging Ventilation Switch Stuck On
What P0D06 means
Stuck On means the ventilation switch remains closed when it should be open, so the pilot is held near 3 V and the station reads a permanent demand for charging with ventilation. Stations that cannot provide ventilation do not supply power in that state, which in practice stops charging altogether. Likely causes are a welded or sticking switch, a short across the 270 Ω branch, or a module output that no longer releases. No manufacturer documents this code publicly; GM's Chevrolet Volt checks the same switch through P0D01 by the pilot level it causes in a self-test, and Mercedes-Benz documents the matching failure of charging switch A as P0CFE00 (switch not opening, cured by software). The counterpart is P0D05, circuit faults are P0D00 to P0D03. The car is detected at the station but does not charge.
P0D06 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0D06
- Charging station does not supply power
- Charging error message after plugging in
Common causes of P0D06
- PossibleVentilation switch contacts welded or sticking closed
- PossibleShort across the ventilation resistor branch
- Less likelyModule output or software holding the switch on
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Control pilot ventilation switchWiring harnessOn board charger
What each part of P0D06 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 06 | The exact fault in that area. |
What to do next
- Note P0D06 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 P0D06
What does P0D06 mean?
P0D06 means "Control Pilot Charging Ventilation Switch Stuck On". Stuck On means the ventilation switch remains closed when it should be open, so the pilot is held near 3 V and the station reads a permanent demand for charging with ventilation. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D06?
P0D06 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0D06 fail an emissions test?
P0D06 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 P0D06 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0D06 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.